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Finding the Fourth Proportional to 223.40, 334.78 and 162.28

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Solution

The fourth proportional to 223.40, 334.78 and 162.28 is: 243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.40 : 334.78 = 162.28 : x
  2. Step 2: Convert to fraction form
    223.40/334.78 = 162.28/x
  3. Step 3: Cross multiply
    223.40x = 334.78 × 162.28
  4. Step 4: Simplify right side
    223.40x = 54,328.10
  5. Step 5: Solve for x
    x = 54,328.10/223.40
  6. Step 6: Final answer
    x = 243.19

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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.