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Finding the Fourth Proportional to 498.98, 747.10 and 254.33

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Solution

The fourth proportional to 498.98, 747.10 and 254.33 is: 380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.98 : 747.10 = 254.33 : x
  2. Step 2: Convert to fraction form
    498.98/747.10 = 254.33/x
  3. Step 3: Cross multiply
    498.98x = 747.10 × 254.33
  4. Step 4: Simplify right side
    498.98x = 190,009.94
  5. Step 5: Solve for x
    x = 190,009.94/498.98
  6. Step 6: Final answer
    x = 380.80

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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.