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Finding the Fourth Proportional to 938.27, 1,295.25 and 545.23

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Solution

The fourth proportional to 938.27, 1,295.25 and 545.23 is: 752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.27 : 1,295.25 = 545.23 : x
  2. Step 2: Convert to fraction form
    938.27/1,295.25 = 545.23/x
  3. Step 3: Cross multiply
    938.27x = 1,295.25 × 545.23
  4. Step 4: Simplify right side
    938.27x = 706,209.16
  5. Step 5: Solve for x
    x = 706,209.16/938.27
  6. Step 6: Final answer
    x = 752.67

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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.