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Finding the Fourth Proportional to 965.03, 1,331.73 and 545.38

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Solution

The fourth proportional to 965.03, 1,331.73 and 545.38 is: 752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.03 : 1,331.73 = 545.38 : x
  2. Step 2: Convert to fraction form
    965.03/1,331.73 = 545.38/x
  3. Step 3: Cross multiply
    965.03x = 1,331.73 × 545.38
  4. Step 4: Simplify right side
    965.03x = 726,298.91
  5. Step 5: Solve for x
    x = 726,298.91/965.03
  6. Step 6: Final answer
    x = 752.62

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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.