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Finding the Fourth Proportional to 949.17, 1,308.84 and 749.66

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Solution

The fourth proportional to 949.17, 1,308.84 and 749.66 is: 1,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.17 : 1,308.84 = 749.66 : x
  2. Step 2: Convert to fraction form
    949.17/1,308.84 = 749.66/x
  3. Step 3: Cross multiply
    949.17x = 1,308.84 × 749.66
  4. Step 4: Simplify right side
    949.17x = 981,178.45
  5. Step 5: Solve for x
    x = 981,178.45/949.17
  6. Step 6: Final answer
    x = 1,033.72

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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.