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Finding the Fourth Proportional to 1,119.42, 1,679.25 and 633.42

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Solution

The fourth proportional to 1,119.42, 1,679.25 and 633.42 is: 950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.42 : 1,679.25 = 633.42 : x
  2. Step 2: Convert to fraction form
    1,119.42/1,679.25 = 633.42/x
  3. Step 3: Cross multiply
    1,119.42x = 1,679.25 × 633.42
  4. Step 4: Simplify right side
    1,119.42x = 1,063,670.54
  5. Step 5: Solve for x
    x = 1,063,670.54/1,119.42
  6. Step 6: Final answer
    x = 950.20

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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.