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Finding the Fourth Proportional to 310.84, 429.25 and 200.51

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Solution

The fourth proportional to 310.84, 429.25 and 200.51 is: 276.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.84 : 429.25 = 200.51 : x
  2. Step 2: Convert to fraction form
    310.84/429.25 = 200.51/x
  3. Step 3: Cross multiply
    310.84x = 429.25 × 200.51
  4. Step 4: Simplify right side
    310.84x = 86,065.77
  5. Step 5: Solve for x
    x = 86,065.77/310.84
  6. Step 6: Final answer
    x = 276.88

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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.