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Finding the Fourth Proportional to 625.68, 857.18 and 602.32

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Solution

The fourth proportional to 625.68, 857.18 and 602.32 is: 825.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.68 : 857.18 = 602.32 : x
  2. Step 2: Convert to fraction form
    625.68/857.18 = 602.32/x
  3. Step 3: Cross multiply
    625.68x = 857.18 × 602.32
  4. Step 4: Simplify right side
    625.68x = 516,296.66
  5. Step 5: Solve for x
    x = 516,296.66/625.68
  6. Step 6: Final answer
    x = 825.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.