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Finding the Fourth Proportional to 480.55, 721.28 and 237.24

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Solution

The fourth proportional to 480.55, 721.28 and 237.24 is: 356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.55 : 721.28 = 237.24 : x
  2. Step 2: Convert to fraction form
    480.55/721.28 = 237.24/x
  3. Step 3: Cross multiply
    480.55x = 721.28 × 237.24
  4. Step 4: Simplify right side
    480.55x = 171,116.47
  5. Step 5: Solve for x
    x = 171,116.47/480.55
  6. Step 6: Final answer
    x = 356.08

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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.