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Finding the Fourth Proportional to 365.20, 503.40 and 271.79

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Solution

The fourth proportional to 365.20, 503.40 and 271.79 is: 374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.20 : 503.40 = 271.79 : x
  2. Step 2: Convert to fraction form
    365.20/503.40 = 271.79/x
  3. Step 3: Cross multiply
    365.20x = 503.40 × 271.79
  4. Step 4: Simplify right side
    365.20x = 136,819.09
  5. Step 5: Solve for x
    x = 136,819.09/365.20
  6. Step 6: Final answer
    x = 374.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.