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Finding the Fourth Proportional to 951.11, 1,312.50 and 552.75

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Solution

The fourth proportional to 951.11, 1,312.50 and 552.75 is: 762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.11 : 1,312.50 = 552.75 : x
  2. Step 2: Convert to fraction form
    951.11/1,312.50 = 552.75/x
  3. Step 3: Cross multiply
    951.11x = 1,312.50 × 552.75
  4. Step 4: Simplify right side
    951.11x = 725,484.38
  5. Step 5: Solve for x
    x = 725,484.38/951.11
  6. Step 6: Final answer
    x = 762.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.