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Finding the Fourth Proportional to 579.65, 869.82 and 232.91

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Solution

The fourth proportional to 579.65, 869.82 and 232.91 is: 349.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.65 : 869.82 = 232.91 : x
  2. Step 2: Convert to fraction form
    579.65/869.82 = 232.91/x
  3. Step 3: Cross multiply
    579.65x = 869.82 × 232.91
  4. Step 4: Simplify right side
    579.65x = 202,589.78
  5. Step 5: Solve for x
    x = 202,589.78/579.65
  6. Step 6: Final answer
    x = 349.50

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Double scale
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Similar ratio
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1.5x scale

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.