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Finding the Fourth Proportional to 246.88, 368.35 and 221.50

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Solution

The fourth proportional to 246.88, 368.35 and 221.50 is: 330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.88 : 368.35 = 221.50 : x
  2. Step 2: Convert to fraction form
    246.88/368.35 = 221.50/x
  3. Step 3: Cross multiply
    246.88x = 368.35 × 221.50
  4. Step 4: Simplify right side
    246.88x = 81,589.43
  5. Step 5: Solve for x
    x = 81,589.43/246.88
  6. Step 6: Final answer
    x = 330.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.