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Finding the Fourth Proportional to 422.48, 633.72 and 240.08

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Solution

The fourth proportional to 422.48, 633.72 and 240.08 is: 360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.48 : 633.72 = 240.08 : x
  2. Step 2: Convert to fraction form
    422.48/633.72 = 240.08/x
  3. Step 3: Cross multiply
    422.48x = 633.72 × 240.08
  4. Step 4: Simplify right side
    422.48x = 152,143.50
  5. Step 5: Solve for x
    x = 152,143.50/422.48
  6. Step 6: Final answer
    x = 360.12

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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.