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Finding the Fourth Proportional to 358.13, 537.35 and 141.65

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Solution

The fourth proportional to 358.13, 537.35 and 141.65 is: 212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.13 : 537.35 = 141.65 : x
  2. Step 2: Convert to fraction form
    358.13/537.35 = 141.65/x
  3. Step 3: Cross multiply
    358.13x = 537.35 × 141.65
  4. Step 4: Simplify right side
    358.13x = 76,113.29
  5. Step 5: Solve for x
    x = 76,113.29/358.13
  6. Step 6: Final answer
    x = 212.53

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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.