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Finding the Fourth Proportional to 245.13, 335.83 and 235.90

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Solution

The fourth proportional to 245.13, 335.83 and 235.90 is: 323.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.13 : 335.83 = 235.90 : x
  2. Step 2: Convert to fraction form
    245.13/335.83 = 235.90/x
  3. Step 3: Cross multiply
    245.13x = 335.83 × 235.90
  4. Step 4: Simplify right side
    245.13x = 79,221.12
  5. Step 5: Solve for x
    x = 79,221.12/245.13
  6. Step 6: Final answer
    x = 323.19

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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.