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Finding the Fourth Proportional to 59.64, 81.62 and 58.38

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Solution

The fourth proportional to 59.64, 81.62 and 58.38 is: 79.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.64 : 81.62 = 58.38 : x
  2. Step 2: Convert to fraction form
    59.64/81.62 = 58.38/x
  3. Step 3: Cross multiply
    59.64x = 81.62 × 58.38
  4. Step 4: Simplify right side
    59.64x = 4,764.68
  5. Step 5: Solve for x
    x = 4,764.68/59.64
  6. Step 6: Final answer
    x = 79.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.