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Finding the Fourth Proportional to 480.57, 663.14 and 270.71

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Solution

The fourth proportional to 480.57, 663.14 and 270.71 is: 373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.57 : 663.14 = 270.71 : x
  2. Step 2: Convert to fraction form
    480.57/663.14 = 270.71/x
  3. Step 3: Cross multiply
    480.57x = 663.14 × 270.71
  4. Step 4: Simplify right side
    480.57x = 179,517.28
  5. Step 5: Solve for x
    x = 179,517.28/480.57
  6. Step 6: Final answer
    x = 373.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.