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Finding the Fourth Proportional to 277.13, 415.80 and 174.30

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Solution

The fourth proportional to 277.13, 415.80 and 174.30 is: 261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.13 : 415.80 = 174.30 : x
  2. Step 2: Convert to fraction form
    277.13/415.80 = 174.30/x
  3. Step 3: Cross multiply
    277.13x = 415.80 × 174.30
  4. Step 4: Simplify right side
    277.13x = 72,473.94
  5. Step 5: Solve for x
    x = 72,473.94/277.13
  6. Step 6: Final answer
    x = 261.52

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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.