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Finding the Fourth Proportional to 477.67, 716.30 and 272.33

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Solution

The fourth proportional to 477.67, 716.30 and 272.33 is: 408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.67 : 716.30 = 272.33 : x
  2. Step 2: Convert to fraction form
    477.67/716.30 = 272.33/x
  3. Step 3: Cross multiply
    477.67x = 716.30 × 272.33
  4. Step 4: Simplify right side
    477.67x = 195,068.62
  5. Step 5: Solve for x
    x = 195,068.62/477.67
  6. Step 6: Final answer
    x = 408.38

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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.