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Finding the Fourth Proportional to 611.40, 917.06 and 200.88

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Solution

The fourth proportional to 611.40, 917.06 and 200.88 is: 301.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.40 : 917.06 = 200.88 : x
  2. Step 2: Convert to fraction form
    611.40/917.06 = 200.88/x
  3. Step 3: Cross multiply
    611.40x = 917.06 × 200.88
  4. Step 4: Simplify right side
    611.40x = 184,219.01
  5. Step 5: Solve for x
    x = 184,219.01/611.40
  6. Step 6: Final answer
    x = 301.31

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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.