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Finding the Fourth Proportional to 360.95, 498.04 and 211.55

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Solution

The fourth proportional to 360.95, 498.04 and 211.55 is: 291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.95 : 498.04 = 211.55 : x
  2. Step 2: Convert to fraction form
    360.95/498.04 = 211.55/x
  3. Step 3: Cross multiply
    360.95x = 498.04 × 211.55
  4. Step 4: Simplify right side
    360.95x = 105,357.34
  5. Step 5: Solve for x
    x = 105,357.34/360.95
  6. Step 6: Final answer
    x = 291.89

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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.