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Finding the Fourth Proportional to 79.63, 119.21 and 59.43

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Solution

The fourth proportional to 79.63, 119.21 and 59.43 is: 88.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.63 : 119.21 = 59.43 : x
  2. Step 2: Convert to fraction form
    79.63/119.21 = 59.43/x
  3. Step 3: Cross multiply
    79.63x = 119.21 × 59.43
  4. Step 4: Simplify right side
    79.63x = 7,084.65
  5. Step 5: Solve for x
    x = 7,084.65/79.63
  6. Step 6: Final answer
    x = 88.97

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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.