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Finding the Fourth Proportional to 360.85, 498.05 and 283.09

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Solution

The fourth proportional to 360.85, 498.05 and 283.09 is: 390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.85 : 498.05 = 283.09 : x
  2. Step 2: Convert to fraction form
    360.85/498.05 = 283.09/x
  3. Step 3: Cross multiply
    360.85x = 498.05 × 283.09
  4. Step 4: Simplify right side
    360.85x = 140,992.97
  5. Step 5: Solve for x
    x = 140,992.97/360.85
  6. Step 6: Final answer
    x = 390.72

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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.