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Finding the Fourth Proportional to 613.49, 920.31 and 202.67

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Solution

The fourth proportional to 613.49, 920.31 and 202.67 is: 304.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.49 : 920.31 = 202.67 : x
  2. Step 2: Convert to fraction form
    613.49/920.31 = 202.67/x
  3. Step 3: Cross multiply
    613.49x = 920.31 × 202.67
  4. Step 4: Simplify right side
    613.49x = 186,519.23
  5. Step 5: Solve for x
    x = 186,519.23/613.49
  6. Step 6: Final answer
    x = 304.03

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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.