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Finding the Fourth Proportional to 632.38, 872.64 and 370.38

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Solution

The fourth proportional to 632.38, 872.64 and 370.38 is: 511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.38 : 872.64 = 370.38 : x
  2. Step 2: Convert to fraction form
    632.38/872.64 = 370.38/x
  3. Step 3: Cross multiply
    632.38x = 872.64 × 370.38
  4. Step 4: Simplify right side
    632.38x = 323,208.40
  5. Step 5: Solve for x
    x = 323,208.40/632.38
  6. Step 6: Final answer
    x = 511.10

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1.5x scale

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.