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Finding the Fourth Proportional to 632.68, 873.12 and 370.72

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Solution

The fourth proportional to 632.68, 873.12 and 370.72 is: 511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.68 : 873.12 = 370.72 : x
  2. Step 2: Convert to fraction form
    632.68/873.12 = 370.72/x
  3. Step 3: Cross multiply
    632.68x = 873.12 × 370.72
  4. Step 4: Simplify right side
    632.68x = 323,683.05
  5. Step 5: Solve for x
    x = 323,683.05/632.68
  6. Step 6: Final answer
    x = 511.61

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Why These Related Problems?

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