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Finding the Fourth Proportional to 355.17, 489.99 and 244.50

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Solution

The fourth proportional to 355.17, 489.99 and 244.50 is: 337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.17 : 489.99 = 244.50 : x
  2. Step 2: Convert to fraction form
    355.17/489.99 = 244.50/x
  3. Step 3: Cross multiply
    355.17x = 489.99 × 244.50
  4. Step 4: Simplify right side
    355.17x = 119,802.56
  5. Step 5: Solve for x
    x = 119,802.56/355.17
  6. Step 6: Final answer
    x = 337.31

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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.