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Finding the Fourth Proportional to 1,744.38, 2,406.65 and 998.07

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Solution

The fourth proportional to 1,744.38, 2,406.65 and 998.07 is: 1,377.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.38 : 2,406.65 = 998.07 : x
  2. Step 2: Convert to fraction form
    1,744.38/2,406.65 = 998.07/x
  3. Step 3: Cross multiply
    1,744.38x = 2,406.65 × 998.07
  4. Step 4: Simplify right side
    1,744.38x = 2,402,007.66
  5. Step 5: Solve for x
    x = 2,402,007.66/1,744.38
  6. Step 6: Final answer
    x = 1,377.00

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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.