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Finding the Fourth Proportional to 277.84, 383.40 and 212.24

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Solution

The fourth proportional to 277.84, 383.40 and 212.24 is: 292.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.84 : 383.40 = 212.24 : x
  2. Step 2: Convert to fraction form
    277.84/383.40 = 212.24/x
  3. Step 3: Cross multiply
    277.84x = 383.40 × 212.24
  4. Step 4: Simplify right side
    277.84x = 81,372.82
  5. Step 5: Solve for x
    x = 81,372.82/277.84
  6. Step 6: Final answer
    x = 292.88

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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.