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Finding the Fourth Proportional to 898.80, 1,348.38 and 282.49

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Solution

The fourth proportional to 898.80, 1,348.38 and 282.49 is: 423.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.80 : 1,348.38 = 282.49 : x
  2. Step 2: Convert to fraction form
    898.80/1,348.38 = 282.49/x
  3. Step 3: Cross multiply
    898.80x = 1,348.38 × 282.49
  4. Step 4: Simplify right side
    898.80x = 380,903.87
  5. Step 5: Solve for x
    x = 380,903.87/898.80
  6. Step 6: Final answer
    x = 423.79

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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.