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Finding the Fourth Proportional to 621.01, 862.94 and 614.26

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Solution

The fourth proportional to 621.01, 862.94 and 614.26 is: 853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.01 : 862.94 = 614.26 : x
  2. Step 2: Convert to fraction form
    621.01/862.94 = 614.26/x
  3. Step 3: Cross multiply
    621.01x = 862.94 × 614.26
  4. Step 4: Simplify right side
    621.01x = 530,069.52
  5. Step 5: Solve for x
    x = 530,069.52/621.01
  6. Step 6: Final answer
    x = 853.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.