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Finding the Fourth Proportional to 480.51, 663.11 and 451.15

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Solution

The fourth proportional to 480.51, 663.11 and 451.15 is: 622.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.51 : 663.11 = 451.15 : x
  2. Step 2: Convert to fraction form
    480.51/663.11 = 451.15/x
  3. Step 3: Cross multiply
    480.51x = 663.11 × 451.15
  4. Step 4: Simplify right side
    480.51x = 299,162.08
  5. Step 5: Solve for x
    x = 299,162.08/480.51
  6. Step 6: Final answer
    x = 622.59

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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.