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Finding the Fourth Proportional to 1,169.55, 1,754.48 and 347.72

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Solution

The fourth proportional to 1,169.55, 1,754.48 and 347.72 is: 521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.55 : 1,754.48 = 347.72 : x
  2. Step 2: Convert to fraction form
    1,169.55/1,754.48 = 347.72/x
  3. Step 3: Cross multiply
    1,169.55x = 1,754.48 × 347.72
  4. Step 4: Simplify right side
    1,169.55x = 610,059.88
  5. Step 5: Solve for x
    x = 610,059.88/1,169.55
  6. Step 6: Final answer
    x = 521.62

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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.