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Finding the Fourth Proportional to 84.04, 125.88 and 63.69

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Solution

The fourth proportional to 84.04, 125.88 and 63.69 is: 95.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.04 : 125.88 = 63.69 : x
  2. Step 2: Convert to fraction form
    84.04/125.88 = 63.69/x
  3. Step 3: Cross multiply
    84.04x = 125.88 × 63.69
  4. Step 4: Simplify right side
    84.04x = 8,017.30
  5. Step 5: Solve for x
    x = 8,017.30/84.04
  6. Step 6: Final answer
    x = 95.40

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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.