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Finding the Fourth Proportional to 632.20, 872.49 and 370.21

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Solution

The fourth proportional to 632.20, 872.49 and 370.21 is: 510.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.20 : 872.49 = 370.21 : x
  2. Step 2: Convert to fraction form
    632.20/872.49 = 370.21/x
  3. Step 3: Cross multiply
    632.20x = 872.49 × 370.21
  4. Step 4: Simplify right side
    632.20x = 323,004.52
  5. Step 5: Solve for x
    x = 323,004.52/632.20
  6. Step 6: Final answer
    x = 510.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.