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Finding the Fourth Proportional to 624.15, 939.92 and 587.70

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Solution

The fourth proportional to 624.15, 939.92 and 587.70 is: 885.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.15 : 939.92 = 587.70 : x
  2. Step 2: Convert to fraction form
    624.15/939.92 = 587.70/x
  3. Step 3: Cross multiply
    624.15x = 939.92 × 587.70
  4. Step 4: Simplify right side
    624.15x = 552,388.05
  5. Step 5: Solve for x
    x = 552,388.05/624.15
  6. Step 6: Final answer
    x = 885.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.