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Finding the Fourth Proportional to 342.27, 513.58 and 159.45

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Solution

The fourth proportional to 342.27, 513.58 and 159.45 is: 239.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.27 : 513.58 = 159.45 : x
  2. Step 2: Convert to fraction form
    342.27/513.58 = 159.45/x
  3. Step 3: Cross multiply
    342.27x = 513.58 × 159.45
  4. Step 4: Simplify right side
    342.27x = 81,890.33
  5. Step 5: Solve for x
    x = 81,890.33/342.27
  6. Step 6: Final answer
    x = 239.26

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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.