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Finding the Fourth Proportional to 203.69, 304.76 and 159.89

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Solution

The fourth proportional to 203.69, 304.76 and 159.89 is: 239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.69 : 304.76 = 159.89 : x
  2. Step 2: Convert to fraction form
    203.69/304.76 = 159.89/x
  3. Step 3: Cross multiply
    203.69x = 304.76 × 159.89
  4. Step 4: Simplify right side
    203.69x = 48,726.95
  5. Step 5: Solve for x
    x = 48,726.95/203.69
  6. Step 6: Final answer
    x = 239.22

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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.