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Finding the Fourth Proportional to 611.48, 917.23 and 200.66

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Solution

The fourth proportional to 611.48, 917.23 and 200.66 is: 300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.48 : 917.23 = 200.66 : x
  2. Step 2: Convert to fraction form
    611.48/917.23 = 200.66/x
  3. Step 3: Cross multiply
    611.48x = 917.23 × 200.66
  4. Step 4: Simplify right side
    611.48x = 184,051.37
  5. Step 5: Solve for x
    x = 184,051.37/611.48
  6. Step 6: Final answer
    x = 300.99

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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.