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Finding the Fourth Proportional to 891.54, 1,335.29 and 695.03

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Solution

The fourth proportional to 891.54, 1,335.29 and 695.03 is: 1,040.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.54 : 1,335.29 = 695.03 : x
  2. Step 2: Convert to fraction form
    891.54/1,335.29 = 695.03/x
  3. Step 3: Cross multiply
    891.54x = 1,335.29 × 695.03
  4. Step 4: Simplify right side
    891.54x = 928,056.46
  5. Step 5: Solve for x
    x = 928,056.46/891.54
  6. Step 6: Final answer
    x = 1,040.96

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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.