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Finding the Fourth Proportional to 626.28, 862.26 and 501.48

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Solution

The fourth proportional to 626.28, 862.26 and 501.48 is: 690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.28 : 862.26 = 501.48 : x
  2. Step 2: Convert to fraction form
    626.28/862.26 = 501.48/x
  3. Step 3: Cross multiply
    626.28x = 862.26 × 501.48
  4. Step 4: Simplify right side
    626.28x = 432,406.14
  5. Step 5: Solve for x
    x = 432,406.14/626.28
  6. Step 6: Final answer
    x = 690.44

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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.