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Finding the Fourth Proportional to 498.70, 747.51 and 254.89

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Solution

The fourth proportional to 498.70, 747.51 and 254.89 is: 382.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.70 : 747.51 = 254.89 : x
  2. Step 2: Convert to fraction form
    498.70/747.51 = 254.89/x
  3. Step 3: Cross multiply
    498.70x = 747.51 × 254.89
  4. Step 4: Simplify right side
    498.70x = 190,532.82
  5. Step 5: Solve for x
    x = 190,532.82/498.70
  6. Step 6: Final answer
    x = 382.06

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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.