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Finding the Fourth Proportional to 277.36, 415.44 and 253.68

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Solution

The fourth proportional to 277.36, 415.44 and 253.68 is: 379.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.36 : 415.44 = 253.68 : x
  2. Step 2: Convert to fraction form
    277.36/415.44 = 253.68/x
  3. Step 3: Cross multiply
    277.36x = 415.44 × 253.68
  4. Step 4: Simplify right side
    277.36x = 105,388.82
  5. Step 5: Solve for x
    x = 105,388.82/277.36
  6. Step 6: Final answer
    x = 379.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.