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Finding the Fourth Proportional to 477.47, 716.11 and 152.78

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Solution

The fourth proportional to 477.47, 716.11 and 152.78 is: 229.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.47 : 716.11 = 152.78 : x
  2. Step 2: Convert to fraction form
    477.47/716.11 = 152.78/x
  3. Step 3: Cross multiply
    477.47x = 716.11 × 152.78
  4. Step 4: Simplify right side
    477.47x = 109,403.32
  5. Step 5: Solve for x
    x = 109,403.32/477.47
  6. Step 6: Final answer
    x = 229.13

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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.