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Finding the Third Proportional to 716.30 and 1,139.77

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Solution

The third proportional to 716.30 and 1,139.77 is: 1,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.30 : 1,139.77 = 1,139.77 : x
  2. Step 2: Convert to fraction form
    716.30/1,139.77 = 1,139.77/x
  3. Step 3: Cross multiply
    716.30x = 1,139.77 × 1,139.77
  4. Step 4: Simplify right side
    716.30x = 1,299,085.71
  5. Step 5: Solve for x
    x = 1,299,085.71/716.30
  6. Step 6: Final answer
    x = 1,813.60

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.