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Finding the Fourth Proportional to 211.28, 318.16 and 184.56

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Solution

The fourth proportional to 211.28, 318.16 and 184.56 is: 277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.28 : 318.16 = 184.56 : x
  2. Step 2: Convert to fraction form
    211.28/318.16 = 184.56/x
  3. Step 3: Cross multiply
    211.28x = 318.16 × 184.56
  4. Step 4: Simplify right side
    211.28x = 58,719.61
  5. Step 5: Solve for x
    x = 58,719.61/211.28
  6. Step 6: Final answer
    x = 277.92

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.