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Finding the Fourth Proportional to 61.47, 91.80 and 41.04

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Solution

The fourth proportional to 61.47, 91.80 and 41.04 is: 61.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.47 : 91.80 = 41.04 : x
  2. Step 2: Convert to fraction form
    61.47/91.80 = 41.04/x
  3. Step 3: Cross multiply
    61.47x = 91.80 × 41.04
  4. Step 4: Simplify right side
    61.47x = 3,767.47
  5. Step 5: Solve for x
    x = 3,767.47/61.47
  6. Step 6: Final answer
    x = 61.29

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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.