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Finding the Fourth Proportional to 360.96, 498.18 and 205.74

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Solution

The fourth proportional to 360.96, 498.18 and 205.74 is: 283.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.96 : 498.18 = 205.74 : x
  2. Step 2: Convert to fraction form
    360.96/498.18 = 205.74/x
  3. Step 3: Cross multiply
    360.96x = 498.18 × 205.74
  4. Step 4: Simplify right side
    360.96x = 102,495.55
  5. Step 5: Solve for x
    x = 102,495.55/360.96
  6. Step 6: Final answer
    x = 283.95

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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.