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Finding the Fourth Proportional to 73.38, 110.56 and 66.44

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Solution

The fourth proportional to 73.38, 110.56 and 66.44 is: 100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.38 : 110.56 = 66.44 : x
  2. Step 2: Convert to fraction form
    73.38/110.56 = 66.44/x
  3. Step 3: Cross multiply
    73.38x = 110.56 × 66.44
  4. Step 4: Simplify right side
    73.38x = 7,345.27
  5. Step 5: Solve for x
    x = 7,345.27/73.38
  6. Step 6: Final answer
    x = 100.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.