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Finding the Fourth Proportional to 613.39, 920.09 and 202.51

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Solution

The fourth proportional to 613.39, 920.09 and 202.51 is: 303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.39 : 920.09 = 202.51 : x
  2. Step 2: Convert to fraction form
    613.39/920.09 = 202.51/x
  3. Step 3: Cross multiply
    613.39x = 920.09 × 202.51
  4. Step 4: Simplify right side
    613.39x = 186,327.43
  5. Step 5: Solve for x
    x = 186,327.43/613.39
  6. Step 6: Final answer
    x = 303.77

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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.