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Finding the Fourth Proportional to 481.01, 663.70 and 284.58

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Solution

The fourth proportional to 481.01, 663.70 and 284.58 is: 392.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.01 : 663.70 = 284.58 : x
  2. Step 2: Convert to fraction form
    481.01/663.70 = 284.58/x
  3. Step 3: Cross multiply
    481.01x = 663.70 × 284.58
  4. Step 4: Simplify right side
    481.01x = 188,875.75
  5. Step 5: Solve for x
    x = 188,875.75/481.01
  6. Step 6: Final answer
    x = 392.66

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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.