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Finding the Fourth Proportional to 901.41, 1,351.30 and 324.15

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Solution

The fourth proportional to 901.41, 1,351.30 and 324.15 is: 485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.41 : 1,351.30 = 324.15 : x
  2. Step 2: Convert to fraction form
    901.41/1,351.30 = 324.15/x
  3. Step 3: Cross multiply
    901.41x = 1,351.30 × 324.15
  4. Step 4: Simplify right side
    901.41x = 438,023.90
  5. Step 5: Solve for x
    x = 438,023.90/901.41
  6. Step 6: Final answer
    x = 485.93

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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.