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Finding the Fourth Proportional to 625.86, 863.79 and 598.18

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Solution

The fourth proportional to 625.86, 863.79 and 598.18 is: 825.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.86 : 863.79 = 598.18 : x
  2. Step 2: Convert to fraction form
    625.86/863.79 = 598.18/x
  3. Step 3: Cross multiply
    625.86x = 863.79 × 598.18
  4. Step 4: Simplify right side
    625.86x = 516,701.90
  5. Step 5: Solve for x
    x = 516,701.90/625.86
  6. Step 6: Final answer
    x = 825.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.