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Finding the Fourth Proportional to 949.81, 1,310.76 and 576.73

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Solution

The fourth proportional to 949.81, 1,310.76 and 576.73 is: 795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.81 : 1,310.76 = 576.73 : x
  2. Step 2: Convert to fraction form
    949.81/1,310.76 = 576.73/x
  3. Step 3: Cross multiply
    949.81x = 1,310.76 × 576.73
  4. Step 4: Simplify right side
    949.81x = 755,954.61
  5. Step 5: Solve for x
    x = 755,954.61/949.81
  6. Step 6: Final answer
    x = 795.90

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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.