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Finding the Fourth Proportional to 666.25, 999.36 and 179.35

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Solution

The fourth proportional to 666.25, 999.36 and 179.35 is: 269.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.25 : 999.36 = 179.35 : x
  2. Step 2: Convert to fraction form
    666.25/999.36 = 179.35/x
  3. Step 3: Cross multiply
    666.25x = 999.36 × 179.35
  4. Step 4: Simplify right side
    666.25x = 179,232.72
  5. Step 5: Solve for x
    x = 179,232.72/666.25
  6. Step 6: Final answer
    x = 269.02

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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.