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Finding the Fourth Proportional to 894.28, 1,332.74 and 872.41

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Solution

The fourth proportional to 894.28, 1,332.74 and 872.41 is: 1,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.28 : 1,332.74 = 872.41 : x
  2. Step 2: Convert to fraction form
    894.28/1,332.74 = 872.41/x
  3. Step 3: Cross multiply
    894.28x = 1,332.74 × 872.41
  4. Step 4: Simplify right side
    894.28x = 1,162,695.70
  5. Step 5: Solve for x
    x = 1,162,695.70/894.28
  6. Step 6: Final answer
    x = 1,300.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.