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Finding the Fourth Proportional to 901.74, 1,352.62 and 252.48

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Solution

The fourth proportional to 901.74, 1,352.62 and 252.48 is: 378.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.74 : 1,352.62 = 252.48 : x
  2. Step 2: Convert to fraction form
    901.74/1,352.62 = 252.48/x
  3. Step 3: Cross multiply
    901.74x = 1,352.62 × 252.48
  4. Step 4: Simplify right side
    901.74x = 341,508.87
  5. Step 5: Solve for x
    x = 341,508.87/901.74
  6. Step 6: Final answer
    x = 378.72

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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.