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Finding the Fourth Proportional to 497.96, 747.40 and 254.64

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Solution

The fourth proportional to 497.96, 747.40 and 254.64 is: 382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.96 : 747.40 = 254.64 : x
  2. Step 2: Convert to fraction form
    497.96/747.40 = 254.64/x
  3. Step 3: Cross multiply
    497.96x = 747.40 × 254.64
  4. Step 4: Simplify right side
    497.96x = 190,317.94
  5. Step 5: Solve for x
    x = 190,317.94/497.96
  6. Step 6: Final answer
    x = 382.20

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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.