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Finding the Fourth Proportional to 245.44, 336.20 and 242.32

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Solution

The fourth proportional to 245.44, 336.20 and 242.32 is: 331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.44 : 336.20 = 242.32 : x
  2. Step 2: Convert to fraction form
    245.44/336.20 = 242.32/x
  3. Step 3: Cross multiply
    245.44x = 336.20 × 242.32
  4. Step 4: Simplify right side
    245.44x = 81,467.98
  5. Step 5: Solve for x
    x = 81,467.98/245.44
  6. Step 6: Final answer
    x = 331.93

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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.