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Finding the Fourth Proportional to 400.92, 602.48 and 238.64

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Solution

The fourth proportional to 400.92, 602.48 and 238.64 is: 358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.92 : 602.48 = 238.64 : x
  2. Step 2: Convert to fraction form
    400.92/602.48 = 238.64/x
  3. Step 3: Cross multiply
    400.92x = 602.48 × 238.64
  4. Step 4: Simplify right side
    400.92x = 143,775.83
  5. Step 5: Solve for x
    x = 143,775.83/400.92
  6. Step 6: Final answer
    x = 358.61

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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.