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Finding the Fourth Proportional to 278.35, 383.91 and 241.45

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Solution

The fourth proportional to 278.35, 383.91 and 241.45 is: 333.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.35 : 383.91 = 241.45 : x
  2. Step 2: Convert to fraction form
    278.35/383.91 = 241.45/x
  3. Step 3: Cross multiply
    278.35x = 383.91 × 241.45
  4. Step 4: Simplify right side
    278.35x = 92,695.07
  5. Step 5: Solve for x
    x = 92,695.07/278.35
  6. Step 6: Final answer
    x = 333.02

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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.