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Finding the Fourth Proportional to 337.21, 505.44 and 131.70

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Solution

The fourth proportional to 337.21, 505.44 and 131.70 is: 197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.21 : 505.44 = 131.70 : x
  2. Step 2: Convert to fraction form
    337.21/505.44 = 131.70/x
  3. Step 3: Cross multiply
    337.21x = 505.44 × 131.70
  4. Step 4: Simplify right side
    337.21x = 66,566.45
  5. Step 5: Solve for x
    x = 66,566.45/337.21
  6. Step 6: Final answer
    x = 197.40

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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.