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Finding the Fourth Proportional to 341.96, 512.71 and 280.94

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Solution

The fourth proportional to 341.96, 512.71 and 280.94 is: 421.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.96 : 512.71 = 280.94 : x
  2. Step 2: Convert to fraction form
    341.96/512.71 = 280.94/x
  3. Step 3: Cross multiply
    341.96x = 512.71 × 280.94
  4. Step 4: Simplify right side
    341.96x = 144,037.48
  5. Step 5: Solve for x
    x = 144,037.48/341.96
  6. Step 6: Final answer
    x = 421.22

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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.