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Finding the Fourth Proportional to 58.58, 87.42 and 52.82

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Solution

The fourth proportional to 58.58, 87.42 and 52.82 is: 78.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.58 : 87.42 = 52.82 : x
  2. Step 2: Convert to fraction form
    58.58/87.42 = 52.82/x
  3. Step 3: Cross multiply
    58.58x = 87.42 × 52.82
  4. Step 4: Simplify right side
    58.58x = 4,617.52
  5. Step 5: Solve for x
    x = 4,617.52/58.58
  6. Step 6: Final answer
    x = 78.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.