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Finding the Fourth Proportional to 366.72, 547.32 and 318.12

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Solution

The fourth proportional to 366.72, 547.32 and 318.12 is: 474.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.72 : 547.32 = 318.12 : x
  2. Step 2: Convert to fraction form
    366.72/547.32 = 318.12/x
  3. Step 3: Cross multiply
    366.72x = 547.32 × 318.12
  4. Step 4: Simplify right side
    366.72x = 174,113.44
  5. Step 5: Solve for x
    x = 174,113.44/366.72
  6. Step 6: Final answer
    x = 474.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.