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Finding the Fourth Proportional to 220.60, 304.36 and 158.32

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Solution

The fourth proportional to 220.60, 304.36 and 158.32 is: 218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.60 : 304.36 = 158.32 : x
  2. Step 2: Convert to fraction form
    220.60/304.36 = 158.32/x
  3. Step 3: Cross multiply
    220.60x = 304.36 × 158.32
  4. Step 4: Simplify right side
    220.60x = 48,186.28
  5. Step 5: Solve for x
    x = 48,186.28/220.60
  6. Step 6: Final answer
    x = 218.43

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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.