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Finding the Fourth Proportional to 531.98, 798.14 and 258.08

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Solution

The fourth proportional to 531.98, 798.14 and 258.08 is: 387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.98 : 798.14 = 258.08 : x
  2. Step 2: Convert to fraction form
    531.98/798.14 = 258.08/x
  3. Step 3: Cross multiply
    531.98x = 798.14 × 258.08
  4. Step 4: Simplify right side
    531.98x = 205,983.97
  5. Step 5: Solve for x
    x = 205,983.97/531.98
  6. Step 6: Final answer
    x = 387.20

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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.