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Finding the Fourth Proportional to 246.79, 371.55 and 218.06

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Solution

The fourth proportional to 246.79, 371.55 and 218.06 is: 328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.79 : 371.55 = 218.06 : x
  2. Step 2: Convert to fraction form
    246.79/371.55 = 218.06/x
  3. Step 3: Cross multiply
    246.79x = 371.55 × 218.06
  4. Step 4: Simplify right side
    246.79x = 81,019.10
  5. Step 5: Solve for x
    x = 81,019.10/246.79
  6. Step 6: Final answer
    x = 328.30

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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.