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Finding the Fourth Proportional to 291.99, 402.73 and 245.62

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Solution

The fourth proportional to 291.99, 402.73 and 245.62 is: 338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.99 : 402.73 = 245.62 : x
  2. Step 2: Convert to fraction form
    291.99/402.73 = 245.62/x
  3. Step 3: Cross multiply
    291.99x = 402.73 × 245.62
  4. Step 4: Simplify right side
    291.99x = 98,918.54
  5. Step 5: Solve for x
    x = 98,918.54/291.99
  6. Step 6: Final answer
    x = 338.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.