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Finding the Third Proportional to 890.16 and 1,217.53

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Solution

The third proportional to 890.16 and 1,217.53 is: 1,665.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.16 : 1,217.53 = 1,217.53 : x
  2. Step 2: Convert to fraction form
    890.16/1,217.53 = 1,217.53/x
  3. Step 3: Cross multiply
    890.16x = 1,217.53 × 1,217.53
  4. Step 4: Simplify right side
    890.16x = 1,482,382.34
  5. Step 5: Solve for x
    x = 1,482,382.34/890.16
  6. Step 6: Final answer
    x = 1,665.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.