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Finding the Fourth Proportional to 274.35, 411.64 and 144.31

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Solution

The fourth proportional to 274.35, 411.64 and 144.31 is: 216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.35 : 411.64 = 144.31 : x
  2. Step 2: Convert to fraction form
    274.35/411.64 = 144.31/x
  3. Step 3: Cross multiply
    274.35x = 411.64 × 144.31
  4. Step 4: Simplify right side
    274.35x = 59,403.77
  5. Step 5: Solve for x
    x = 59,403.77/274.35
  6. Step 6: Final answer
    x = 216.53

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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.