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Finding the Fourth Proportional to 1,494.08, 2,241.56 and 672.20

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Solution

The fourth proportional to 1,494.08, 2,241.56 and 672.20 is: 1,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.08 : 2,241.56 = 672.20 : x
  2. Step 2: Convert to fraction form
    1,494.08/2,241.56 = 672.20/x
  3. Step 3: Cross multiply
    1,494.08x = 2,241.56 × 672.20
  4. Step 4: Simplify right side
    1,494.08x = 1,506,776.63
  5. Step 5: Solve for x
    x = 1,506,776.63/1,494.08
  6. Step 6: Final answer
    x = 1,008.50

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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.