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Finding the Fourth Proportional to 220.32, 303.74 and 158.08

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Solution

The fourth proportional to 220.32, 303.74 and 158.08 is: 217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.32 : 303.74 = 158.08 : x
  2. Step 2: Convert to fraction form
    220.32/303.74 = 158.08/x
  3. Step 3: Cross multiply
    220.32x = 303.74 × 158.08
  4. Step 4: Simplify right side
    220.32x = 48,015.22
  5. Step 5: Solve for x
    x = 48,015.22/220.32
  6. Step 6: Final answer
    x = 217.93

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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.