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Finding the Fourth Proportional to 960.27, 1,324.72 and 624.15

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Solution

The fourth proportional to 960.27, 1,324.72 and 624.15 is: 861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.27 : 1,324.72 = 624.15 : x
  2. Step 2: Convert to fraction form
    960.27/1,324.72 = 624.15/x
  3. Step 3: Cross multiply
    960.27x = 1,324.72 × 624.15
  4. Step 4: Simplify right side
    960.27x = 826,817.36
  5. Step 5: Solve for x
    x = 826,817.36/960.27
  6. Step 6: Final answer
    x = 861.03

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Double scale
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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.