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Finding the Fourth Proportional to 406.11, 608.79 and 162.57

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Solution

The fourth proportional to 406.11, 608.79 and 162.57 is: 243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.11 : 608.79 = 162.57 : x
  2. Step 2: Convert to fraction form
    406.11/608.79 = 162.57/x
  3. Step 3: Cross multiply
    406.11x = 608.79 × 162.57
  4. Step 4: Simplify right side
    406.11x = 98,970.99
  5. Step 5: Solve for x
    x = 98,970.99/406.11
  6. Step 6: Final answer
    x = 243.70

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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.