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Finding the Fourth Proportional to 891.46, 1,335.94 and 695.57

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Solution

The fourth proportional to 891.46, 1,335.94 and 695.57 is: 1,042.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.46 : 1,335.94 = 695.57 : x
  2. Step 2: Convert to fraction form
    891.46/1,335.94 = 695.57/x
  3. Step 3: Cross multiply
    891.46x = 1,335.94 × 695.57
  4. Step 4: Simplify right side
    891.46x = 929,242.79
  5. Step 5: Solve for x
    x = 929,242.79/891.46
  6. Step 6: Final answer
    x = 1,042.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.