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Finding the Fourth Proportional to 279.51, 418.92 and 157.88

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Solution

The fourth proportional to 279.51, 418.92 and 157.88 is: 236.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.51 : 418.92 = 157.88 : x
  2. Step 2: Convert to fraction form
    279.51/418.92 = 157.88/x
  3. Step 3: Cross multiply
    279.51x = 418.92 × 157.88
  4. Step 4: Simplify right side
    279.51x = 66,137.00
  5. Step 5: Solve for x
    x = 66,137.00/279.51
  6. Step 6: Final answer
    x = 236.62

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