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Finding the Fourth Proportional to 503.74, 753.66 and 308.71

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Solution

The fourth proportional to 503.74, 753.66 and 308.71 is: 461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.74 : 753.66 = 308.71 : x
  2. Step 2: Convert to fraction form
    503.74/753.66 = 308.71/x
  3. Step 3: Cross multiply
    503.74x = 753.66 × 308.71
  4. Step 4: Simplify right side
    503.74x = 232,662.38
  5. Step 5: Solve for x
    x = 232,662.38/503.74
  6. Step 6: Final answer
    x = 461.87

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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.