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Finding the Fourth Proportional to 356.69, 535.04 and 113.24

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Solution

The fourth proportional to 356.69, 535.04 and 113.24 is: 169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.69 : 535.04 = 113.24 : x
  2. Step 2: Convert to fraction form
    356.69/535.04 = 113.24/x
  3. Step 3: Cross multiply
    356.69x = 535.04 × 113.24
  4. Step 4: Simplify right side
    356.69x = 60,587.93
  5. Step 5: Solve for x
    x = 60,587.93/356.69
  6. Step 6: Final answer
    x = 169.86

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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.