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Finding the Fourth Proportional to 119.52, 179.20 and 58.57

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Solution

The fourth proportional to 119.52, 179.20 and 58.57 is: 87.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.52 : 179.20 = 58.57 : x
  2. Step 2: Convert to fraction form
    119.52/179.20 = 58.57/x
  3. Step 3: Cross multiply
    119.52x = 179.20 × 58.57
  4. Step 4: Simplify right side
    119.52x = 10,495.74
  5. Step 5: Solve for x
    x = 10,495.74/119.52
  6. Step 6: Final answer
    x = 87.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.