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Finding the Fourth Proportional to 370.11, 554.61 and 252.57

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Solution

The fourth proportional to 370.11, 554.61 and 252.57 is: 378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.11 : 554.61 = 252.57 : x
  2. Step 2: Convert to fraction form
    370.11/554.61 = 252.57/x
  3. Step 3: Cross multiply
    370.11x = 554.61 × 252.57
  4. Step 4: Simplify right side
    370.11x = 140,077.85
  5. Step 5: Solve for x
    x = 140,077.85/370.11
  6. Step 6: Final answer
    x = 378.48

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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.