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Finding the Third Proportional to 876 and 961.50

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Solution

The third proportional to 876 and 961.50 is: 1,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    876 : 961.50 = 961.50 : x
  2. Step 2: Convert to fraction form
    876/961.50 = 961.50/x
  3. Step 3: Cross multiply
    876x = 961.50 × 961.50
  4. Step 4: Simplify right side
    876x = 924,482.25
  5. Step 5: Solve for x
    x = 924,482.25/876
  6. Step 6: Final answer
    x = 1,055.35

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.