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Finding the Fourth Proportional to 940.60, 1,411.12 and 324.28

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Solution

The fourth proportional to 940.60, 1,411.12 and 324.28 is: 486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.60 : 1,411.12 = 324.28 : x
  2. Step 2: Convert to fraction form
    940.60/1,411.12 = 324.28/x
  3. Step 3: Cross multiply
    940.60x = 1,411.12 × 324.28
  4. Step 4: Simplify right side
    940.60x = 457,597.99
  5. Step 5: Solve for x
    x = 457,597.99/940.60
  6. Step 6: Final answer
    x = 486.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 941.60, 1,412.62 and 325.28
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.