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Finding the Fourth Proportional to 275.96, 380.58 and 247.16

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Solution

The fourth proportional to 275.96, 380.58 and 247.16 is: 340.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.96 : 380.58 = 247.16 : x
  2. Step 2: Convert to fraction form
    275.96/380.58 = 247.16/x
  3. Step 3: Cross multiply
    275.96x = 380.58 × 247.16
  4. Step 4: Simplify right side
    275.96x = 94,064.15
  5. Step 5: Solve for x
    x = 94,064.15/275.96
  6. Step 6: Final answer
    x = 340.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.