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Finding the Fourth Proportional to 436.65, 654.81 and 162.68

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Solution

The fourth proportional to 436.65, 654.81 and 162.68 is: 243.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.65 : 654.81 = 162.68 : x
  2. Step 2: Convert to fraction form
    436.65/654.81 = 162.68/x
  3. Step 3: Cross multiply
    436.65x = 654.81 × 162.68
  4. Step 4: Simplify right side
    436.65x = 106,524.49
  5. Step 5: Solve for x
    x = 106,524.49/436.65
  6. Step 6: Final answer
    x = 243.96

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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.