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Finding the Fourth Proportional to 435.72, 601.11 and 278.31

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Solution

The fourth proportional to 435.72, 601.11 and 278.31 is: 383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.72 : 601.11 = 278.31 : x
  2. Step 2: Convert to fraction form
    435.72/601.11 = 278.31/x
  3. Step 3: Cross multiply
    435.72x = 601.11 × 278.31
  4. Step 4: Simplify right side
    435.72x = 167,294.92
  5. Step 5: Solve for x
    x = 167,294.92/435.72
  6. Step 6: Final answer
    x = 383.95

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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.