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Finding the Fourth Proportional to 481.62, 665.49 and 384.18

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Solution

The fourth proportional to 481.62, 665.49 and 384.18 is: 530.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.62 : 665.49 = 384.18 : x
  2. Step 2: Convert to fraction form
    481.62/665.49 = 384.18/x
  3. Step 3: Cross multiply
    481.62x = 665.49 × 384.18
  4. Step 4: Simplify right side
    481.62x = 255,667.95
  5. Step 5: Solve for x
    x = 255,667.95/481.62
  6. Step 6: Final answer
    x = 530.85

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Why These Related Problems?

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