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Finding the Fourth Proportional to 58.05, 87.43 and 44.61

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Solution

The fourth proportional to 58.05, 87.43 and 44.61 is: 67.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.05 : 87.43 = 44.61 : x
  2. Step 2: Convert to fraction form
    58.05/87.43 = 44.61/x
  3. Step 3: Cross multiply
    58.05x = 87.43 × 44.61
  4. Step 4: Simplify right side
    58.05x = 3,900.03
  5. Step 5: Solve for x
    x = 3,900.03/58.05
  6. Step 6: Final answer
    x = 67.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.