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Finding the Fourth Proportional to 239.05, 329.53 and 151.57

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Solution

The fourth proportional to 239.05, 329.53 and 151.57 is: 208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.05 : 329.53 = 151.57 : x
  2. Step 2: Convert to fraction form
    239.05/329.53 = 151.57/x
  3. Step 3: Cross multiply
    239.05x = 329.53 × 151.57
  4. Step 4: Simplify right side
    239.05x = 49,946.86
  5. Step 5: Solve for x
    x = 49,946.86/239.05
  6. Step 6: Final answer
    x = 208.94

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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.