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Finding the Fourth Proportional to 358.25, 537.83 and 243.20

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Solution

The fourth proportional to 358.25, 537.83 and 243.20 is: 365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.25 : 537.83 = 243.20 : x
  2. Step 2: Convert to fraction form
    358.25/537.83 = 243.20/x
  3. Step 3: Cross multiply
    358.25x = 537.83 × 243.20
  4. Step 4: Simplify right side
    358.25x = 130,801.30
  5. Step 5: Solve for x
    x = 130,801.30/358.25
  6. Step 6: Final answer
    x = 365.12

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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.