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Finding the Fourth Proportional to 277.46, 382.58 and 202.64

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Solution

The fourth proportional to 277.46, 382.58 and 202.64 is: 279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.46 : 382.58 = 202.64 : x
  2. Step 2: Convert to fraction form
    277.46/382.58 = 202.64/x
  3. Step 3: Cross multiply
    277.46x = 382.58 × 202.64
  4. Step 4: Simplify right side
    277.46x = 77,523.09
  5. Step 5: Solve for x
    x = 77,523.09/277.46
  6. Step 6: Final answer
    x = 279.41

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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.