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Finding the Fourth Proportional to 894.18, 1,242.23 and 886.17

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Solution

The fourth proportional to 894.18, 1,242.23 and 886.17 is: 1,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.18 : 1,242.23 = 886.17 : x
  2. Step 2: Convert to fraction form
    894.18/1,242.23 = 886.17/x
  3. Step 3: Cross multiply
    894.18x = 1,242.23 × 886.17
  4. Step 4: Simplify right side
    894.18x = 1,100,826.96
  5. Step 5: Solve for x
    x = 1,100,826.96/894.18
  6. Step 6: Final answer
    x = 1,231.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.