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Finding the Fourth Proportional to 360.95, 498.12 and 211.67

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Solution

The fourth proportional to 360.95, 498.12 and 211.67 is: 292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.95 : 498.12 = 211.67 : x
  2. Step 2: Convert to fraction form
    360.95/498.12 = 211.67/x
  3. Step 3: Cross multiply
    360.95x = 498.12 × 211.67
  4. Step 4: Simplify right side
    360.95x = 105,434.57
  5. Step 5: Solve for x
    x = 105,434.57/360.95
  6. Step 6: Final answer
    x = 292.11

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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.