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Finding the Fourth Proportional to 626.26, 940.25 and 318.32

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Solution

The fourth proportional to 626.26, 940.25 and 318.32 is: 477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.26 : 940.25 = 318.32 : x
  2. Step 2: Convert to fraction form
    626.26/940.25 = 318.32/x
  3. Step 3: Cross multiply
    626.26x = 940.25 × 318.32
  4. Step 4: Simplify right side
    626.26x = 299,300.38
  5. Step 5: Solve for x
    x = 299,300.38/626.26
  6. Step 6: Final answer
    x = 477.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.