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Finding the Fourth Proportional to 247.79, 373.06 and 219.06

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Solution

The fourth proportional to 247.79, 373.06 and 219.06 is: 329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.79 : 373.06 = 219.06 : x
  2. Step 2: Convert to fraction form
    247.79/373.06 = 219.06/x
  3. Step 3: Cross multiply
    247.79x = 373.06 × 219.06
  4. Step 4: Simplify right side
    247.79x = 81,721.98
  5. Step 5: Solve for x
    x = 81,721.98/247.79
  6. Step 6: Final answer
    x = 329.81

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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.