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Finding the Fourth Proportional to 1,244.98, 1,868.19 and 998.47

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Solution

The fourth proportional to 1,244.98, 1,868.19 and 998.47 is: 1,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.98 : 1,868.19 = 998.47 : x
  2. Step 2: Convert to fraction form
    1,244.98/1,868.19 = 998.47/x
  3. Step 3: Cross multiply
    1,244.98x = 1,868.19 × 998.47
  4. Step 4: Simplify right side
    1,244.98x = 1,865,331.67
  5. Step 5: Solve for x
    x = 1,865,331.67/1,244.98
  6. Step 6: Final answer
    x = 1,498.28

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1.5x scale

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.