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Finding the Fourth Proportional to 253.93, 350.45 and 212.41

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Solution

The fourth proportional to 253.93, 350.45 and 212.41 is: 293.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.93 : 350.45 = 212.41 : x
  2. Step 2: Convert to fraction form
    253.93/350.45 = 212.41/x
  3. Step 3: Cross multiply
    253.93x = 350.45 × 212.41
  4. Step 4: Simplify right side
    253.93x = 74,436.27
  5. Step 5: Solve for x
    x = 74,436.27/253.93
  6. Step 6: Final answer
    x = 293.14

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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.