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Finding the Fourth Proportional to 247.98, 373.41 and 219.30

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Solution

The fourth proportional to 247.98, 373.41 and 219.30 is: 330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.98 : 373.41 = 219.30 : x
  2. Step 2: Convert to fraction form
    247.98/373.41 = 219.30/x
  3. Step 3: Cross multiply
    247.98x = 373.41 × 219.30
  4. Step 4: Simplify right side
    247.98x = 81,888.81
  5. Step 5: Solve for x
    x = 81,888.81/247.98
  6. Step 6: Final answer
    x = 330.22

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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.