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Finding the Fourth Proportional to 951.14, 1,311.10 and 912.26

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Solution

The fourth proportional to 951.14, 1,311.10 and 912.26 is: 1,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.14 : 1,311.10 = 912.26 : x
  2. Step 2: Convert to fraction form
    951.14/1,311.10 = 912.26/x
  3. Step 3: Cross multiply
    951.14x = 1,311.10 × 912.26
  4. Step 4: Simplify right side
    951.14x = 1,196,055.25
  5. Step 5: Solve for x
    x = 1,196,055.25/951.14
  6. Step 6: Final answer
    x = 1,257.50

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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.