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Finding the Fourth Proportional to 292.29, 438.44 and 211.29

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Solution

The fourth proportional to 292.29, 438.44 and 211.29 is: 316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.29 : 438.44 = 211.29 : x
  2. Step 2: Convert to fraction form
    292.29/438.44 = 211.29/x
  3. Step 3: Cross multiply
    292.29x = 438.44 × 211.29
  4. Step 4: Simplify right side
    292.29x = 92,636.93
  5. Step 5: Solve for x
    x = 92,636.93/292.29
  6. Step 6: Final answer
    x = 316.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.