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Finding the Fourth Proportional to 58.62, 87.78 and 52.89

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Solution

The fourth proportional to 58.62, 87.78 and 52.89 is: 79.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.62 : 87.78 = 52.89 : x
  2. Step 2: Convert to fraction form
    58.62/87.78 = 52.89/x
  3. Step 3: Cross multiply
    58.62x = 87.78 × 52.89
  4. Step 4: Simplify right side
    58.62x = 4,642.92
  5. Step 5: Solve for x
    x = 4,642.92/58.62
  6. Step 6: Final answer
    x = 79.20

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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.