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Finding the Third Proportional to 831.38 and 1,304.16

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Solution

The third proportional to 831.38 and 1,304.16 is: 2,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.38 : 1,304.16 = 1,304.16 : x
  2. Step 2: Convert to fraction form
    831.38/1,304.16 = 1,304.16/x
  3. Step 3: Cross multiply
    831.38x = 1,304.16 × 1,304.16
  4. Step 4: Simplify right side
    831.38x = 1,700,823.52
  5. Step 5: Solve for x
    x = 1,700,823.52/831.38
  6. Step 6: Final answer
    x = 2,045.80

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.