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Finding the Fourth Proportional to 285.57, 393.98 and 241.25

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Solution

The fourth proportional to 285.57, 393.98 and 241.25 is: 332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.57 : 393.98 = 241.25 : x
  2. Step 2: Convert to fraction form
    285.57/393.98 = 241.25/x
  3. Step 3: Cross multiply
    285.57x = 393.98 × 241.25
  4. Step 4: Simplify right side
    285.57x = 95,044.50
  5. Step 5: Solve for x
    x = 95,044.50/285.57
  6. Step 6: Final answer
    x = 332.82

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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.