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Finding the Fourth Proportional to 950.70, 1,311.84 and 531.03

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Solution

The fourth proportional to 950.70, 1,311.84 and 531.03 is: 732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.70 : 1,311.84 = 531.03 : x
  2. Step 2: Convert to fraction form
    950.70/1,311.84 = 531.03/x
  3. Step 3: Cross multiply
    950.70x = 1,311.84 × 531.03
  4. Step 4: Simplify right side
    950.70x = 696,631.31
  5. Step 5: Solve for x
    x = 696,631.31/950.70
  6. Step 6: Final answer
    x = 732.75

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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.