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Finding the Fourth Proportional to 246.68, 368 and 208.40

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Solution

The fourth proportional to 246.68, 368 and 208.40 is: 310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.68 : 368 = 208.40 : x
  2. Step 2: Convert to fraction form
    246.68/368 = 208.40/x
  3. Step 3: Cross multiply
    246.68x = 368 × 208.40
  4. Step 4: Simplify right side
    246.68x = 76,691.20
  5. Step 5: Solve for x
    x = 76,691.20/246.68
  6. Step 6: Final answer
    x = 310.89

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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.