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Finding the Fourth Proportional to 334.44, 499.50 and 315.72

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Solution

The fourth proportional to 334.44, 499.50 and 315.72 is: 471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.44 : 499.50 = 315.72 : x
  2. Step 2: Convert to fraction form
    334.44/499.50 = 315.72/x
  3. Step 3: Cross multiply
    334.44x = 499.50 × 315.72
  4. Step 4: Simplify right side
    334.44x = 157,702.14
  5. Step 5: Solve for x
    x = 157,702.14/334.44
  6. Step 6: Final answer
    x = 471.54

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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.