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Finding the Third Proportional to 615.09 and 956.81

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Solution

The third proportional to 615.09 and 956.81 is: 1,488.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.09 : 956.81 = 956.81 : x
  2. Step 2: Convert to fraction form
    615.09/956.81 = 956.81/x
  3. Step 3: Cross multiply
    615.09x = 956.81 × 956.81
  4. Step 4: Simplify right side
    615.09x = 915,490.16
  5. Step 5: Solve for x
    x = 915,490.16/615.09
  6. Step 6: Final answer
    x = 1,488.38

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.