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Finding the Fourth Proportional to 613.10, 919.80 and 202.23

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Solution

The fourth proportional to 613.10, 919.80 and 202.23 is: 303.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.10 : 919.80 = 202.23 : x
  2. Step 2: Convert to fraction form
    613.10/919.80 = 202.23/x
  3. Step 3: Cross multiply
    613.10x = 919.80 × 202.23
  4. Step 4: Simplify right side
    613.10x = 186,005.54
  5. Step 5: Solve for x
    x = 186,005.54/613.10
  6. Step 6: Final answer
    x = 303.39

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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.