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Finding the Fourth Proportional to 99.74, 136.75 and 97.04

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Solution

The fourth proportional to 99.74, 136.75 and 97.04 is: 133.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.74 : 136.75 = 97.04 : x
  2. Step 2: Convert to fraction form
    99.74/136.75 = 97.04/x
  3. Step 3: Cross multiply
    99.74x = 136.75 × 97.04
  4. Step 4: Simplify right side
    99.74x = 13,270.22
  5. Step 5: Solve for x
    x = 13,270.22/99.74
  6. Step 6: Final answer
    x = 133.05

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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.