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Finding the Fourth Proportional to 127.59, 176.45 and 125.28

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Solution

The fourth proportional to 127.59, 176.45 and 125.28 is: 173.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.59 : 176.45 = 125.28 : x
  2. Step 2: Convert to fraction form
    127.59/176.45 = 125.28/x
  3. Step 3: Cross multiply
    127.59x = 176.45 × 125.28
  4. Step 4: Simplify right side
    127.59x = 22,105.03
  5. Step 5: Solve for x
    x = 22,105.03/127.59
  6. Step 6: Final answer
    x = 173.25

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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.