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Finding the Fourth Proportional to 950.43, 1,311.55 and 701.66

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Solution

The fourth proportional to 950.43, 1,311.55 and 701.66 is: 968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    950.43 : 1,311.55 = 701.66 : x
  2. Step 2: Convert to fraction form
    950.43/1,311.55 = 701.66/x
  3. Step 3: Cross multiply
    950.43x = 1,311.55 × 701.66
  4. Step 4: Simplify right side
    950.43x = 920,262.17
  5. Step 5: Solve for x
    x = 920,262.17/950.43
  6. Step 6: Final answer
    x = 968.26

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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.