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Finding the Fourth Proportional to 898.38, 1,239.87 and 544.26

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Solution

The fourth proportional to 898.38, 1,239.87 and 544.26 is: 751.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.38 : 1,239.87 = 544.26 : x
  2. Step 2: Convert to fraction form
    898.38/1,239.87 = 544.26/x
  3. Step 3: Cross multiply
    898.38x = 1,239.87 × 544.26
  4. Step 4: Simplify right side
    898.38x = 674,811.65
  5. Step 5: Solve for x
    x = 674,811.65/898.38
  6. Step 6: Final answer
    x = 751.14

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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.