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Finding the Fourth Proportional to 484.47, 727.50 and 317.97

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Solution

The fourth proportional to 484.47, 727.50 and 317.97 is: 477.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.47 : 727.50 = 317.97 : x
  2. Step 2: Convert to fraction form
    484.47/727.50 = 317.97/x
  3. Step 3: Cross multiply
    484.47x = 727.50 × 317.97
  4. Step 4: Simplify right side
    484.47x = 231,323.18
  5. Step 5: Solve for x
    x = 231,323.18/484.47
  6. Step 6: Final answer
    x = 477.48

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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.