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Finding the Fourth Proportional to 358.34, 537.62 and 163.40

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Solution

The fourth proportional to 358.34, 537.62 and 163.40 is: 245.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.34 : 537.62 = 163.40 : x
  2. Step 2: Convert to fraction form
    358.34/537.62 = 163.40/x
  3. Step 3: Cross multiply
    358.34x = 537.62 × 163.40
  4. Step 4: Simplify right side
    358.34x = 87,843.60
  5. Step 5: Solve for x
    x = 87,843.60/358.34
  6. Step 6: Final answer
    x = 245.14

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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.