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Finding the Third Proportional to 750.50 and 1,115

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Solution

The third proportional to 750.50 and 1,115 is: 1,656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.50 : 1,115 = 1,115 : x
  2. Step 2: Convert to fraction form
    750.50/1,115 = 1,115/x
  3. Step 3: Cross multiply
    750.50x = 1,115 × 1,115
  4. Step 4: Simplify right side
    750.50x = 1,243,225
  5. Step 5: Solve for x
    x = 1,243,225/750.50
  6. Step 6: Final answer
    x = 1,656.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.