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Finding the Fourth Proportional to 1,494.54, 2,239.88 and 836.40

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Solution

The fourth proportional to 1,494.54, 2,239.88 and 836.40 is: 1,253.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.54 : 2,239.88 = 836.40 : x
  2. Step 2: Convert to fraction form
    1,494.54/2,239.88 = 836.40/x
  3. Step 3: Cross multiply
    1,494.54x = 2,239.88 × 836.40
  4. Step 4: Simplify right side
    1,494.54x = 1,873,435.63
  5. Step 5: Solve for x
    x = 1,873,435.63/1,494.54
  6. Step 6: Final answer
    x = 1,253.52

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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.