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Finding the Fourth Proportional to 662.13, 913.56 and 451.95

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Solution

The fourth proportional to 662.13, 913.56 and 451.95 is: 623.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.13 : 913.56 = 451.95 : x
  2. Step 2: Convert to fraction form
    662.13/913.56 = 451.95/x
  3. Step 3: Cross multiply
    662.13x = 913.56 × 451.95
  4. Step 4: Simplify right side
    662.13x = 412,883.44
  5. Step 5: Solve for x
    x = 412,883.44/662.13
  6. Step 6: Final answer
    x = 623.57

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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.