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Finding the Fourth Proportional to 620.38, 934.25 and 540.19

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Solution

The fourth proportional to 620.38, 934.25 and 540.19 is: 813.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.38 : 934.25 = 540.19 : x
  2. Step 2: Convert to fraction form
    620.38/934.25 = 540.19/x
  3. Step 3: Cross multiply
    620.38x = 934.25 × 540.19
  4. Step 4: Simplify right side
    620.38x = 504,672.51
  5. Step 5: Solve for x
    x = 504,672.51/620.38
  6. Step 6: Final answer
    x = 813.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.