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Finding the Fourth Proportional to 1,113.36, 1,669.44 and 333.24

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Solution

The fourth proportional to 1,113.36, 1,669.44 and 333.24 is: 499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.36 : 1,669.44 = 333.24 : x
  2. Step 2: Convert to fraction form
    1,113.36/1,669.44 = 333.24/x
  3. Step 3: Cross multiply
    1,113.36x = 1,669.44 × 333.24
  4. Step 4: Simplify right side
    1,113.36x = 556,324.19
  5. Step 5: Solve for x
    x = 556,324.19/1,113.36
  6. Step 6: Final answer
    x = 499.68

Related Problems

Find fourth proportional to 556.68, 834.72 and 166.62
Half scale
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Double scale
Find fourth proportional to 1,114.36, 1,670.94 and 334.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.