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Finding the Fourth Proportional to 42.79, 58.88 and 41.54

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Solution

The fourth proportional to 42.79, 58.88 and 41.54 is: 57.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.79 : 58.88 = 41.54 : x
  2. Step 2: Convert to fraction form
    42.79/58.88 = 41.54/x
  3. Step 3: Cross multiply
    42.79x = 58.88 × 41.54
  4. Step 4: Simplify right side
    42.79x = 2,445.88
  5. Step 5: Solve for x
    x = 2,445.88/42.79
  6. Step 6: Final answer
    x = 57.16

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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.