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Finding the Fourth Proportional to 625.88, 867.38 and 617.07

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Solution

The fourth proportional to 625.88, 867.38 and 617.07 is: 855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.88 : 867.38 = 617.07 : x
  2. Step 2: Convert to fraction form
    625.88/867.38 = 617.07/x
  3. Step 3: Cross multiply
    625.88x = 867.38 × 617.07
  4. Step 4: Simplify right side
    625.88x = 535,234.34
  5. Step 5: Solve for x
    x = 535,234.34/625.88
  6. Step 6: Final answer
    x = 855.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.