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Finding the Fourth Proportional to 520.92, 718.56 and 324.36

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Solution

The fourth proportional to 520.92, 718.56 and 324.36 is: 447.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.92 : 718.56 = 324.36 : x
  2. Step 2: Convert to fraction form
    520.92/718.56 = 324.36/x
  3. Step 3: Cross multiply
    520.92x = 718.56 × 324.36
  4. Step 4: Simplify right side
    520.92x = 233,072.12
  5. Step 5: Solve for x
    x = 233,072.12/520.92
  6. Step 6: Final answer
    x = 447.42

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.