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Finding the Fourth Proportional to 951.88, 1,315.86 and 913.48

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Solution

The fourth proportional to 951.88, 1,315.86 and 913.48 is: 1,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.88 : 1,315.86 = 913.48 : x
  2. Step 2: Convert to fraction form
    951.88/1,315.86 = 913.48/x
  3. Step 3: Cross multiply
    951.88x = 1,315.86 × 913.48
  4. Step 4: Simplify right side
    951.88x = 1,202,011.79
  5. Step 5: Solve for x
    x = 1,202,011.79/951.88
  6. Step 6: Final answer
    x = 1,262.78

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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.