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Finding the Fourth Proportional to 624.98, 939.29 and 617.69

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Solution

The fourth proportional to 624.98, 939.29 and 617.69 is: 928.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.98 : 939.29 = 617.69 : x
  2. Step 2: Convert to fraction form
    624.98/939.29 = 617.69/x
  3. Step 3: Cross multiply
    624.98x = 939.29 × 617.69
  4. Step 4: Simplify right side
    624.98x = 580,182.26
  5. Step 5: Solve for x
    x = 580,182.26/624.98
  6. Step 6: Final answer
    x = 928.33

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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.