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Finding the Third Proportional to 916.31 and 1,353.09

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Solution

The third proportional to 916.31 and 1,353.09 is: 1,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.31 : 1,353.09 = 1,353.09 : x
  2. Step 2: Convert to fraction form
    916.31/1,353.09 = 1,353.09/x
  3. Step 3: Cross multiply
    916.31x = 1,353.09 × 1,353.09
  4. Step 4: Simplify right side
    916.31x = 1,830,862.70
  5. Step 5: Solve for x
    x = 1,830,862.70/916.31
  6. Step 6: Final answer
    x = 1,998.08

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.