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Finding the Fourth Proportional to 339.06, 508.25 and 314.21

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Solution

The fourth proportional to 339.06, 508.25 and 314.21 is: 470.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.06 : 508.25 = 314.21 : x
  2. Step 2: Convert to fraction form
    339.06/508.25 = 314.21/x
  3. Step 3: Cross multiply
    339.06x = 508.25 × 314.21
  4. Step 4: Simplify right side
    339.06x = 159,693.12
  5. Step 5: Solve for x
    x = 159,693.12/339.06
  6. Step 6: Final answer
    x = 470.99

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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.