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Finding the Fourth Proportional to 901.19, 1,352.01 and 380.96

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Solution

The fourth proportional to 901.19, 1,352.01 and 380.96 is: 571.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.19 : 1,352.01 = 380.96 : x
  2. Step 2: Convert to fraction form
    901.19/1,352.01 = 380.96/x
  3. Step 3: Cross multiply
    901.19x = 1,352.01 × 380.96
  4. Step 4: Simplify right side
    901.19x = 515,054.97
  5. Step 5: Solve for x
    x = 515,054.97/901.19
  6. Step 6: Final answer
    x = 571.53

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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.