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Finding the Fourth Proportional to 245.93, 336.48 and 245.21

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Solution

The fourth proportional to 245.93, 336.48 and 245.21 is: 335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.93 : 336.48 = 245.21 : x
  2. Step 2: Convert to fraction form
    245.93/336.48 = 245.21/x
  3. Step 3: Cross multiply
    245.93x = 336.48 × 245.21
  4. Step 4: Simplify right side
    245.93x = 82,505.66
  5. Step 5: Solve for x
    x = 82,505.66/245.93
  6. Step 6: Final answer
    x = 335.49

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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.