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Finding the Fourth Proportional to 1,340.13, 1,849.14 and 898.68

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Solution

The fourth proportional to 1,340.13, 1,849.14 and 898.68 is: 1,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.13 : 1,849.14 = 898.68 : x
  2. Step 2: Convert to fraction form
    1,340.13/1,849.14 = 898.68/x
  3. Step 3: Cross multiply
    1,340.13x = 1,849.14 × 898.68
  4. Step 4: Simplify right side
    1,340.13x = 1,661,785.14
  5. Step 5: Solve for x
    x = 1,661,785.14/1,340.13
  6. Step 6: Final answer
    x = 1,240.02

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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.