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Finding the Fourth Proportional to 436.15, 601.85 and 239.65

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Solution

The fourth proportional to 436.15, 601.85 and 239.65 is: 330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.15 : 601.85 = 239.65 : x
  2. Step 2: Convert to fraction form
    436.15/601.85 = 239.65/x
  3. Step 3: Cross multiply
    436.15x = 601.85 × 239.65
  4. Step 4: Simplify right side
    436.15x = 144,233.35
  5. Step 5: Solve for x
    x = 144,233.35/436.15
  6. Step 6: Final answer
    x = 330.70

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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.