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Finding the Fourth Proportional to 99.52, 137.44 and 70.48

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Solution

The fourth proportional to 99.52, 137.44 and 70.48 is: 97.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.52 : 137.44 = 70.48 : x
  2. Step 2: Convert to fraction form
    99.52/137.44 = 70.48/x
  3. Step 3: Cross multiply
    99.52x = 137.44 × 70.48
  4. Step 4: Simplify right side
    99.52x = 9,686.77
  5. Step 5: Solve for x
    x = 9,686.77/99.52
  6. Step 6: Final answer
    x = 97.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.