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Finding the Fourth Proportional to 750.99, 1,126.74 and 545.19

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Solution

The fourth proportional to 750.99, 1,126.74 and 545.19 is: 817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.99 : 1,126.74 = 545.19 : x
  2. Step 2: Convert to fraction form
    750.99/1,126.74 = 545.19/x
  3. Step 3: Cross multiply
    750.99x = 1,126.74 × 545.19
  4. Step 4: Simplify right side
    750.99x = 614,287.38
  5. Step 5: Solve for x
    x = 614,287.38/750.99
  6. Step 6: Final answer
    x = 817.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.