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Finding the Fourth Proportional to 611.67, 917.59 and 200.85

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Solution

The fourth proportional to 611.67, 917.59 and 200.85 is: 301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.67 : 917.59 = 200.85 : x
  2. Step 2: Convert to fraction form
    611.67/917.59 = 200.85/x
  3. Step 3: Cross multiply
    611.67x = 917.59 × 200.85
  4. Step 4: Simplify right side
    611.67x = 184,298.98
  5. Step 5: Solve for x
    x = 184,298.98/611.67
  6. Step 6: Final answer
    x = 301.30

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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.