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Finding the Fourth Proportional to 277.58, 415.72 and 225.69

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Solution

The fourth proportional to 277.58, 415.72 and 225.69 is: 338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.58 : 415.72 = 225.69 : x
  2. Step 2: Convert to fraction form
    277.58/415.72 = 225.69/x
  3. Step 3: Cross multiply
    277.58x = 415.72 × 225.69
  4. Step 4: Simplify right side
    277.58x = 93,823.85
  5. Step 5: Solve for x
    x = 93,823.85/277.58
  6. Step 6: Final answer
    x = 338.01

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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.