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Finding the Fourth Proportional to 336.90, 504.98 and 131.40

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Solution

The fourth proportional to 336.90, 504.98 and 131.40 is: 196.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.90 : 504.98 = 131.40 : x
  2. Step 2: Convert to fraction form
    336.90/504.98 = 131.40/x
  3. Step 3: Cross multiply
    336.90x = 504.98 × 131.40
  4. Step 4: Simplify right side
    336.90x = 66,353.72
  5. Step 5: Solve for x
    x = 66,353.72/336.90
  6. Step 6: Final answer
    x = 196.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.