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Finding the Fourth Proportional to 1,119.72, 1,679.74 and 350.04

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Solution

The fourth proportional to 1,119.72, 1,679.74 and 350.04 is: 525.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.72 : 1,679.74 = 350.04 : x
  2. Step 2: Convert to fraction form
    1,119.72/1,679.74 = 350.04/x
  3. Step 3: Cross multiply
    1,119.72x = 1,679.74 × 350.04
  4. Step 4: Simplify right side
    1,119.72x = 587,976.19
  5. Step 5: Solve for x
    x = 587,976.19/1,119.72
  6. Step 6: Final answer
    x = 525.11

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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.