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Finding the Fourth Proportional to 74.13, 101.84 and 62.45

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Solution

The fourth proportional to 74.13, 101.84 and 62.45 is: 85.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.13 : 101.84 = 62.45 : x
  2. Step 2: Convert to fraction form
    74.13/101.84 = 62.45/x
  3. Step 3: Cross multiply
    74.13x = 101.84 × 62.45
  4. Step 4: Simplify right side
    74.13x = 6,359.91
  5. Step 5: Solve for x
    x = 6,359.91/74.13
  6. Step 6: Final answer
    x = 85.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.