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Finding the Fourth Proportional to 211.84, 292.64 and 185.56

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Solution

The fourth proportional to 211.84, 292.64 and 185.56 is: 256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.84 : 292.64 = 185.56 : x
  2. Step 2: Convert to fraction form
    211.84/292.64 = 185.56/x
  3. Step 3: Cross multiply
    211.84x = 292.64 × 185.56
  4. Step 4: Simplify right side
    211.84x = 54,302.28
  5. Step 5: Solve for x
    x = 54,302.28/211.84
  6. Step 6: Final answer
    x = 256.34

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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.