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Finding the Fourth Proportional to 278.04, 383.70 and 167.54

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Solution

The fourth proportional to 278.04, 383.70 and 167.54 is: 231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278.04 : 383.70 = 167.54 : x
  2. Step 2: Convert to fraction form
    278.04/383.70 = 167.54/x
  3. Step 3: Cross multiply
    278.04x = 383.70 × 167.54
  4. Step 4: Simplify right side
    278.04x = 64,285.10
  5. Step 5: Solve for x
    x = 64,285.10/278.04
  6. Step 6: Final answer
    x = 231.21

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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.