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Finding the Fourth Proportional to 171.77, 237.14 and 129.99

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Solution

The fourth proportional to 171.77, 237.14 and 129.99 is: 179.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.77 : 237.14 = 129.99 : x
  2. Step 2: Convert to fraction form
    171.77/237.14 = 129.99/x
  3. Step 3: Cross multiply
    171.77x = 237.14 × 129.99
  4. Step 4: Simplify right side
    171.77x = 30,825.18
  5. Step 5: Solve for x
    x = 30,825.18/171.77
  6. Step 6: Final answer
    x = 179.46

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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.