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Finding the Fourth Proportional to 341.33, 511.77 and 280.31

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Solution

The fourth proportional to 341.33, 511.77 and 280.31 is: 420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.33 : 511.77 = 280.31 : x
  2. Step 2: Convert to fraction form
    341.33/511.77 = 280.31/x
  3. Step 3: Cross multiply
    341.33x = 511.77 × 280.31
  4. Step 4: Simplify right side
    341.33x = 143,454.25
  5. Step 5: Solve for x
    x = 143,454.25/341.33
  6. Step 6: Final answer
    x = 420.28

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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.