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Finding the Fourth Proportional to 114.04, 171.10 and 77.88

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Solution

The fourth proportional to 114.04, 171.10 and 77.88 is: 116.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.04 : 171.10 = 77.88 : x
  2. Step 2: Convert to fraction form
    114.04/171.10 = 77.88/x
  3. Step 3: Cross multiply
    114.04x = 171.10 × 77.88
  4. Step 4: Simplify right side
    114.04x = 13,325.27
  5. Step 5: Solve for x
    x = 13,325.27/114.04
  6. Step 6: Final answer
    x = 116.85

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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.