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Finding the Fourth Proportional to 1,363.22, 1,882.32 and 891.44

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Solution

The fourth proportional to 1,363.22, 1,882.32 and 891.44 is: 1,230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.22 : 1,882.32 = 891.44 : x
  2. Step 2: Convert to fraction form
    1,363.22/1,882.32 = 891.44/x
  3. Step 3: Cross multiply
    1,363.22x = 1,882.32 × 891.44
  4. Step 4: Simplify right side
    1,363.22x = 1,677,975.34
  5. Step 5: Solve for x
    x = 1,677,975.34/1,363.22
  6. Step 6: Final answer
    x = 1,230.89

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1.5x scale

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.