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Finding the Fourth Proportional to 334.26, 499.23 and 315.63

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Solution

The fourth proportional to 334.26, 499.23 and 315.63 is: 471.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.26 : 499.23 = 315.63 : x
  2. Step 2: Convert to fraction form
    334.26/499.23 = 315.63/x
  3. Step 3: Cross multiply
    334.26x = 499.23 × 315.63
  4. Step 4: Simplify right side
    334.26x = 157,571.96
  5. Step 5: Solve for x
    x = 157,571.96/334.26
  6. Step 6: Final answer
    x = 471.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.