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Finding the Fourth Proportional to 483.32, 661.26 and 481.28

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Solution

The fourth proportional to 483.32, 661.26 and 481.28 is: 658.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.32 : 661.26 = 481.28 : x
  2. Step 2: Convert to fraction form
    483.32/661.26 = 481.28/x
  3. Step 3: Cross multiply
    483.32x = 661.26 × 481.28
  4. Step 4: Simplify right side
    483.32x = 318,251.21
  5. Step 5: Solve for x
    x = 318,251.21/483.32
  6. Step 6: Final answer
    x = 658.47

Related Problems

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.