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Finding the Fourth Proportional to 575.49, 863.22 and 190.74

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Solution

The fourth proportional to 575.49, 863.22 and 190.74 is: 286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.49 : 863.22 = 190.74 : x
  2. Step 2: Convert to fraction form
    575.49/863.22 = 190.74/x
  3. Step 3: Cross multiply
    575.49x = 863.22 × 190.74
  4. Step 4: Simplify right side
    575.49x = 164,650.58
  5. Step 5: Solve for x
    x = 164,650.58/575.49
  6. Step 6: Final answer
    x = 286.11

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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.