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Finding the Fourth Proportional to 365.70, 548 and 274.32

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Solution

The fourth proportional to 365.70, 548 and 274.32 is: 411.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.70 : 548 = 274.32 : x
  2. Step 2: Convert to fraction form
    365.70/548 = 274.32/x
  3. Step 3: Cross multiply
    365.70x = 548 × 274.32
  4. Step 4: Simplify right side
    365.70x = 150,327.36
  5. Step 5: Solve for x
    x = 150,327.36/365.70
  6. Step 6: Final answer
    x = 411.07

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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.