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Finding the Fourth Proportional to 257.76, 384.48 and 241.92

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Solution

The fourth proportional to 257.76, 384.48 and 241.92 is: 360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257.76 : 384.48 = 241.92 : x
  2. Step 2: Convert to fraction form
    257.76/384.48 = 241.92/x
  3. Step 3: Cross multiply
    257.76x = 384.48 × 241.92
  4. Step 4: Simplify right side
    257.76x = 93,013.40
  5. Step 5: Solve for x
    x = 93,013.40/257.76
  6. Step 6: Final answer
    x = 360.85

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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.