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Finding the Fourth Proportional to 58.93, 81.27 and 39.29

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Solution

The fourth proportional to 58.93, 81.27 and 39.29 is: 54.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.93 : 81.27 = 39.29 : x
  2. Step 2: Convert to fraction form
    58.93/81.27 = 39.29/x
  3. Step 3: Cross multiply
    58.93x = 81.27 × 39.29
  4. Step 4: Simplify right side
    58.93x = 3,192.69
  5. Step 5: Solve for x
    x = 3,192.69/58.93
  6. Step 6: Final answer
    x = 54.18

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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.