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Finding the Third Proportional to 624.94 and 931.97

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Solution

The third proportional to 624.94 and 931.97 is: 1,389.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.94 : 931.97 = 931.97 : x
  2. Step 2: Convert to fraction form
    624.94/931.97 = 931.97/x
  3. Step 3: Cross multiply
    624.94x = 931.97 × 931.97
  4. Step 4: Simplify right side
    624.94x = 868,565.75
  5. Step 5: Solve for x
    x = 868,565.75/624.94
  6. Step 6: Final answer
    x = 1,389.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.