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Finding the Fourth Proportional to 358.17, 537.31 and 221.36

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Solution

The fourth proportional to 358.17, 537.31 and 221.36 is: 332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.17 : 537.31 = 221.36 : x
  2. Step 2: Convert to fraction form
    358.17/537.31 = 221.36/x
  3. Step 3: Cross multiply
    358.17x = 537.31 × 221.36
  4. Step 4: Simplify right side
    358.17x = 118,939.73
  5. Step 5: Solve for x
    x = 118,939.73/358.17
  6. Step 6: Final answer
    x = 332.08

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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.