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Finding the Fourth Proportional to 365.32, 547.74 and 311.32

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Solution

The fourth proportional to 365.32, 547.74 and 311.32 is: 466.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.32 : 547.74 = 311.32 : x
  2. Step 2: Convert to fraction form
    365.32/547.74 = 311.32/x
  3. Step 3: Cross multiply
    365.32x = 547.74 × 311.32
  4. Step 4: Simplify right side
    365.32x = 170,522.42
  5. Step 5: Solve for x
    x = 170,522.42/365.32
  6. Step 6: Final answer
    x = 466.78

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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.