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Finding the Third Proportional to 885.38 and 972.84

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Solution

The third proportional to 885.38 and 972.84 is: 1,068.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.38 : 972.84 = 972.84 : x
  2. Step 2: Convert to fraction form
    885.38/972.84 = 972.84/x
  3. Step 3: Cross multiply
    885.38x = 972.84 × 972.84
  4. Step 4: Simplify right side
    885.38x = 946,424.96
  5. Step 5: Solve for x
    x = 946,424.96/885.38
  6. Step 6: Final answer
    x = 1,068.95

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.