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Finding the Fourth Proportional to 99.11, 148.64 and 26.97

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Solution

The fourth proportional to 99.11, 148.64 and 26.97 is: 40.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.11 : 148.64 = 26.97 : x
  2. Step 2: Convert to fraction form
    99.11/148.64 = 26.97/x
  3. Step 3: Cross multiply
    99.11x = 148.64 × 26.97
  4. Step 4: Simplify right side
    99.11x = 4,008.69
  5. Step 5: Solve for x
    x = 4,008.69/99.11
  6. Step 6: Final answer
    x = 40.45

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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.