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Finding the Fourth Proportional to 116.91, 176.05 and 101.87

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Solution

The fourth proportional to 116.91, 176.05 and 101.87 is: 153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.91 : 176.05 = 101.87 : x
  2. Step 2: Convert to fraction form
    116.91/176.05 = 101.87/x
  3. Step 3: Cross multiply
    116.91x = 176.05 × 101.87
  4. Step 4: Simplify right side
    116.91x = 17,934.12
  5. Step 5: Solve for x
    x = 17,934.12/116.91
  6. Step 6: Final answer
    x = 153.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.