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Finding the Fourth Proportional to 531.90, 797.94 and 258.48

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Solution

The fourth proportional to 531.90, 797.94 and 258.48 is: 387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.90 : 797.94 = 258.48 : x
  2. Step 2: Convert to fraction form
    531.90/797.94 = 258.48/x
  3. Step 3: Cross multiply
    531.90x = 797.94 × 258.48
  4. Step 4: Simplify right side
    531.90x = 206,251.53
  5. Step 5: Solve for x
    x = 206,251.53/531.90
  6. Step 6: Final answer
    x = 387.76

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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.