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Finding the Fourth Proportional to 291.73, 402.28 and 245.07

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Solution

The fourth proportional to 291.73, 402.28 and 245.07 is: 337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.73 : 402.28 = 245.07 : x
  2. Step 2: Convert to fraction form
    291.73/402.28 = 245.07/x
  3. Step 3: Cross multiply
    291.73x = 402.28 × 245.07
  4. Step 4: Simplify right side
    291.73x = 98,586.76
  5. Step 5: Solve for x
    x = 98,586.76/291.73
  6. Step 6: Final answer
    x = 337.94

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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.