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Finding the Fourth Proportional to 272.97, 376.70 and 210.69

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Solution

The fourth proportional to 272.97, 376.70 and 210.69 is: 290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.97 : 376.70 = 210.69 : x
  2. Step 2: Convert to fraction form
    272.97/376.70 = 210.69/x
  3. Step 3: Cross multiply
    272.97x = 376.70 × 210.69
  4. Step 4: Simplify right side
    272.97x = 79,366.92
  5. Step 5: Solve for x
    x = 79,366.92/272.97
  6. Step 6: Final answer
    x = 290.75

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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.