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Finding the Fourth Proportional to 613.11, 919.73 and 202.25

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Solution

The fourth proportional to 613.11, 919.73 and 202.25 is: 303.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.11 : 919.73 = 202.25 : x
  2. Step 2: Convert to fraction form
    613.11/919.73 = 202.25/x
  3. Step 3: Cross multiply
    613.11x = 919.73 × 202.25
  4. Step 4: Simplify right side
    613.11x = 186,009.78
  5. Step 5: Solve for x
    x = 186,009.78/613.11
  6. Step 6: Final answer
    x = 303.39

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Double scale
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Similar ratio
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1.5x scale

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.