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Finding the Fourth Proportional to 341.60, 512.89 and 211.22

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Solution

The fourth proportional to 341.60, 512.89 and 211.22 is: 317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.60 : 512.89 = 211.22 : x
  2. Step 2: Convert to fraction form
    341.60/512.89 = 211.22/x
  3. Step 3: Cross multiply
    341.60x = 512.89 × 211.22
  4. Step 4: Simplify right side
    341.60x = 108,329.53
  5. Step 5: Solve for x
    x = 108,329.53/341.60
  6. Step 6: Final answer
    x = 317.13

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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.