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Finding the Fourth Proportional to 401.52, 601.92 and 216.52

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Solution

The fourth proportional to 401.52, 601.92 and 216.52 is: 324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.52 : 601.92 = 216.52 : x
  2. Step 2: Convert to fraction form
    401.52/601.92 = 216.52/x
  3. Step 3: Cross multiply
    401.52x = 601.92 × 216.52
  4. Step 4: Simplify right side
    401.52x = 130,326.21
  5. Step 5: Solve for x
    x = 130,326.21/401.52
  6. Step 6: Final answer
    x = 324.58

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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.