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Finding the Fourth Proportional to 352.55, 527.91 and 243.20

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Solution

The fourth proportional to 352.55, 527.91 and 243.20 is: 364.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.55 : 527.91 = 243.20 : x
  2. Step 2: Convert to fraction form
    352.55/527.91 = 243.20/x
  3. Step 3: Cross multiply
    352.55x = 527.91 × 243.20
  4. Step 4: Simplify right side
    352.55x = 128,389.94
  5. Step 5: Solve for x
    x = 128,389.94/352.55
  6. Step 6: Final answer
    x = 364.17

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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.