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Finding the Fourth Proportional to 245.21, 337.01 and 198.50

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Solution

The fourth proportional to 245.21, 337.01 and 198.50 is: 272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.21 : 337.01 = 198.50 : x
  2. Step 2: Convert to fraction form
    245.21/337.01 = 198.50/x
  3. Step 3: Cross multiply
    245.21x = 337.01 × 198.50
  4. Step 4: Simplify right side
    245.21x = 66,893.81
  5. Step 5: Solve for x
    x = 66,893.81/245.21
  6. Step 6: Final answer
    x = 272.81

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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.