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Finding the Fourth Proportional to 950.67, 1,311.81 and 552.33

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Solution

The fourth proportional to 950.67, 1,311.81 and 552.33 is: 762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.67 : 1,311.81 = 552.33 : x
  2. Step 2: Convert to fraction form
    950.67/1,311.81 = 552.33/x
  3. Step 3: Cross multiply
    950.67x = 1,311.81 × 552.33
  4. Step 4: Simplify right side
    950.67x = 724,552.02
  5. Step 5: Solve for x
    x = 724,552.02/950.67
  6. Step 6: Final answer
    x = 762.15

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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.