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Finding the Fourth Proportional to 61.17, 84.36 and 44.79

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Solution

The fourth proportional to 61.17, 84.36 and 44.79 is: 61.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.17 : 84.36 = 44.79 : x
  2. Step 2: Convert to fraction form
    61.17/84.36 = 44.79/x
  3. Step 3: Cross multiply
    61.17x = 84.36 × 44.79
  4. Step 4: Simplify right side
    61.17x = 3,778.48
  5. Step 5: Solve for x
    x = 3,778.48/61.17
  6. Step 6: Final answer
    x = 61.77

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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.