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Finding the Fourth Proportional to 483.61, 665.32 and 427.32

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Solution

The fourth proportional to 483.61, 665.32 and 427.32 is: 587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.61 : 665.32 = 427.32 : x
  2. Step 2: Convert to fraction form
    483.61/665.32 = 427.32/x
  3. Step 3: Cross multiply
    483.61x = 665.32 × 427.32
  4. Step 4: Simplify right side
    483.61x = 284,304.54
  5. Step 5: Solve for x
    x = 284,304.54/483.61
  6. Step 6: Final answer
    x = 587.88

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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.