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Finding the Fourth Proportional to 233.72, 348.49 and 208.28

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Solution

The fourth proportional to 233.72, 348.49 and 208.28 is: 310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.72 : 348.49 = 208.28 : x
  2. Step 2: Convert to fraction form
    233.72/348.49 = 208.28/x
  3. Step 3: Cross multiply
    233.72x = 348.49 × 208.28
  4. Step 4: Simplify right side
    233.72x = 72,583.50
  5. Step 5: Solve for x
    x = 72,583.50/233.72
  6. Step 6: Final answer
    x = 310.56

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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.