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Finding the Fourth Proportional to 285.93, 426.81 and 245.61

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Solution

The fourth proportional to 285.93, 426.81 and 245.61 is: 366.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.93 : 426.81 = 245.61 : x
  2. Step 2: Convert to fraction form
    285.93/426.81 = 245.61/x
  3. Step 3: Cross multiply
    285.93x = 426.81 × 245.61
  4. Step 4: Simplify right side
    285.93x = 104,828.80
  5. Step 5: Solve for x
    x = 104,828.80/285.93
  6. Step 6: Final answer
    x = 366.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.