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Finding the Fourth Proportional to 494.12, 740.76 and 250.28

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Solution

The fourth proportional to 494.12, 740.76 and 250.28 is: 375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.12 : 740.76 = 250.28 : x
  2. Step 2: Convert to fraction form
    494.12/740.76 = 250.28/x
  3. Step 3: Cross multiply
    494.12x = 740.76 × 250.28
  4. Step 4: Simplify right side
    494.12x = 185,397.41
  5. Step 5: Solve for x
    x = 185,397.41/494.12
  6. Step 6: Final answer
    x = 375.21

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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.