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Finding the Fourth Proportional to 334.90, 460.22 and 319.66

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Solution

The fourth proportional to 334.90, 460.22 and 319.66 is: 439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.90 : 460.22 = 319.66 : x
  2. Step 2: Convert to fraction form
    334.90/460.22 = 319.66/x
  3. Step 3: Cross multiply
    334.90x = 460.22 × 319.66
  4. Step 4: Simplify right side
    334.90x = 147,113.93
  5. Step 5: Solve for x
    x = 147,113.93/334.90
  6. Step 6: Final answer
    x = 439.28

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.