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Finding the Fourth Proportional to 613.35, 919.49 and 223.29

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Solution

The fourth proportional to 613.35, 919.49 and 223.29 is: 334.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.35 : 919.49 = 223.29 : x
  2. Step 2: Convert to fraction form
    613.35/919.49 = 223.29/x
  3. Step 3: Cross multiply
    613.35x = 919.49 × 223.29
  4. Step 4: Simplify right side
    613.35x = 205,312.92
  5. Step 5: Solve for x
    x = 205,312.92/613.35
  6. Step 6: Final answer
    x = 334.74

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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.