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Finding the Fourth Proportional to 477.28, 718.96 and 474.85

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Solution

The fourth proportional to 477.28, 718.96 and 474.85 is: 715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.28 : 718.96 = 474.85 : x
  2. Step 2: Convert to fraction form
    477.28/718.96 = 474.85/x
  3. Step 3: Cross multiply
    477.28x = 718.96 × 474.85
  4. Step 4: Simplify right side
    477.28x = 341,398.16
  5. Step 5: Solve for x
    x = 341,398.16/477.28
  6. Step 6: Final answer
    x = 715.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.