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Finding the Fourth Proportional to 219.16, 330.04 and 158.72

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Solution

The fourth proportional to 219.16, 330.04 and 158.72 is: 239.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.16 : 330.04 = 158.72 : x
  2. Step 2: Convert to fraction form
    219.16/330.04 = 158.72/x
  3. Step 3: Cross multiply
    219.16x = 330.04 × 158.72
  4. Step 4: Simplify right side
    219.16x = 52,382.30
  5. Step 5: Solve for x
    x = 52,382.30/219.16
  6. Step 6: Final answer
    x = 239.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.