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Finding the Fourth Proportional to 355.68, 490.68 and 244.98

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Solution

The fourth proportional to 355.68, 490.68 and 244.98 is: 337.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.68 : 490.68 = 244.98 : x
  2. Step 2: Convert to fraction form
    355.68/490.68 = 244.98/x
  3. Step 3: Cross multiply
    355.68x = 490.68 × 244.98
  4. Step 4: Simplify right side
    355.68x = 120,206.79
  5. Step 5: Solve for x
    x = 120,206.79/355.68
  6. Step 6: Final answer
    x = 337.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.