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Finding the Fourth Proportional to 494.75, 742.33 and 302.38

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Solution

The fourth proportional to 494.75, 742.33 and 302.38 is: 453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.75 : 742.33 = 302.38 : x
  2. Step 2: Convert to fraction form
    494.75/742.33 = 302.38/x
  3. Step 3: Cross multiply
    494.75x = 742.33 × 302.38
  4. Step 4: Simplify right side
    494.75x = 224,465.75
  5. Step 5: Solve for x
    x = 224,465.75/494.75
  6. Step 6: Final answer
    x = 453.70

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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.