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Finding the Fourth Proportional to 341.77, 512.31 and 239.02

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Solution

The fourth proportional to 341.77, 512.31 and 239.02 is: 358.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.77 : 512.31 = 239.02 : x
  2. Step 2: Convert to fraction form
    341.77/512.31 = 239.02/x
  3. Step 3: Cross multiply
    341.77x = 512.31 × 239.02
  4. Step 4: Simplify right side
    341.77x = 122,452.34
  5. Step 5: Solve for x
    x = 122,452.34/341.77
  6. Step 6: Final answer
    x = 358.29

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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.