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Finding the Fourth Proportional to 235.47, 351.46 and 211.11

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Solution

The fourth proportional to 235.47, 351.46 and 211.11 is: 315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.47 : 351.46 = 211.11 : x
  2. Step 2: Convert to fraction form
    235.47/351.46 = 211.11/x
  3. Step 3: Cross multiply
    235.47x = 351.46 × 211.11
  4. Step 4: Simplify right side
    235.47x = 74,196.19
  5. Step 5: Solve for x
    x = 74,196.19/235.47
  6. Step 6: Final answer
    x = 315.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.