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Finding the Fourth Proportional to 161.16, 223.32 and 159.18

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Solution

The fourth proportional to 161.16, 223.32 and 159.18 is: 220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.16 : 223.32 = 159.18 : x
  2. Step 2: Convert to fraction form
    161.16/223.32 = 159.18/x
  3. Step 3: Cross multiply
    161.16x = 223.32 × 159.18
  4. Step 4: Simplify right side
    161.16x = 35,548.08
  5. Step 5: Solve for x
    x = 35,548.08/161.16
  6. Step 6: Final answer
    x = 220.58

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.