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Finding the Fourth Proportional to 74.08, 110.60 and 61.93

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Solution

The fourth proportional to 74.08, 110.60 and 61.93 is: 92.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.08 : 110.60 = 61.93 : x
  2. Step 2: Convert to fraction form
    74.08/110.60 = 61.93/x
  3. Step 3: Cross multiply
    74.08x = 110.60 × 61.93
  4. Step 4: Simplify right side
    74.08x = 6,849.46
  5. Step 5: Solve for x
    x = 6,849.46/74.08
  6. Step 6: Final answer
    x = 92.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.