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Finding the Fourth Proportional to 1,494.39, 2,235.03 and 1,331.01

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Solution

The fourth proportional to 1,494.39, 2,235.03 and 1,331.01 is: 1,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.39 : 2,235.03 = 1,331.01 : x
  2. Step 2: Convert to fraction form
    1,494.39/2,235.03 = 1,331.01/x
  3. Step 3: Cross multiply
    1,494.39x = 2,235.03 × 1,331.01
  4. Step 4: Simplify right side
    1,494.39x = 2,974,847.28
  5. Step 5: Solve for x
    x = 2,974,847.28/1,494.39
  6. Step 6: Final answer
    x = 1,990.68

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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.