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Finding the Fourth Proportional to 502.49, 753.67 and 155.80

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Solution

The fourth proportional to 502.49, 753.67 and 155.80 is: 233.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.49 : 753.67 = 155.80 : x
  2. Step 2: Convert to fraction form
    502.49/753.67 = 155.80/x
  3. Step 3: Cross multiply
    502.49x = 753.67 × 155.80
  4. Step 4: Simplify right side
    502.49x = 117,421.79
  5. Step 5: Solve for x
    x = 117,421.79/502.49
  6. Step 6: Final answer
    x = 233.68

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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.