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Finding the Fourth Proportional to 279.96, 419.92 and 97.37

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Solution

The fourth proportional to 279.96, 419.92 and 97.37 is: 146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.96 : 419.92 = 97.37 : x
  2. Step 2: Convert to fraction form
    279.96/419.92 = 97.37/x
  3. Step 3: Cross multiply
    279.96x = 419.92 × 97.37
  4. Step 4: Simplify right side
    279.96x = 40,886.40
  5. Step 5: Solve for x
    x = 40,886.40/279.96
  6. Step 6: Final answer
    x = 146.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.