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Finding the Fourth Proportional to 940.77, 1,411.05 and 324.36

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Solution

The fourth proportional to 940.77, 1,411.05 and 324.36 is: 486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.77 : 1,411.05 = 324.36 : x
  2. Step 2: Convert to fraction form
    940.77/1,411.05 = 324.36/x
  3. Step 3: Cross multiply
    940.77x = 1,411.05 × 324.36
  4. Step 4: Simplify right side
    940.77x = 457,688.18
  5. Step 5: Solve for x
    x = 457,688.18/940.77
  6. Step 6: Final answer
    x = 486.50

Related Problems

Find fourth proportional to 470.39, 705.53 and 162.18
Half scale
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Double scale
Find fourth proportional to 941.77, 1,412.55 and 325.36
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.