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Finding the Fourth Proportional to 477.39, 716.93 and 307.47

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Solution

The fourth proportional to 477.39, 716.93 and 307.47 is: 461.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.39 : 716.93 = 307.47 : x
  2. Step 2: Convert to fraction form
    477.39/716.93 = 307.47/x
  3. Step 3: Cross multiply
    477.39x = 716.93 × 307.47
  4. Step 4: Simplify right side
    477.39x = 220,432.93
  5. Step 5: Solve for x
    x = 220,432.93/477.39
  6. Step 6: Final answer
    x = 461.75

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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.