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Finding the Fourth Proportional to 353.48, 487.65 and 206.03

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Solution

The fourth proportional to 353.48, 487.65 and 206.03 is: 284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.48 : 487.65 = 206.03 : x
  2. Step 2: Convert to fraction form
    353.48/487.65 = 206.03/x
  3. Step 3: Cross multiply
    353.48x = 487.65 × 206.03
  4. Step 4: Simplify right side
    353.48x = 100,470.53
  5. Step 5: Solve for x
    x = 100,470.53/353.48
  6. Step 6: Final answer
    x = 284.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.