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Finding the Fourth Proportional to 58.29, 80.39 and 41.91

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Solution

The fourth proportional to 58.29, 80.39 and 41.91 is: 57.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.29 : 80.39 = 41.91 : x
  2. Step 2: Convert to fraction form
    58.29/80.39 = 41.91/x
  3. Step 3: Cross multiply
    58.29x = 80.39 × 41.91
  4. Step 4: Simplify right side
    58.29x = 3,368.94
  5. Step 5: Solve for x
    x = 3,368.94/58.29
  6. Step 6: Final answer
    x = 57.80

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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.