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Finding the Fourth Proportional to 507.12, 760.62 and 218.52

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Solution

The fourth proportional to 507.12, 760.62 and 218.52 is: 327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.12 : 760.62 = 218.52 : x
  2. Step 2: Convert to fraction form
    507.12/760.62 = 218.52/x
  3. Step 3: Cross multiply
    507.12x = 760.62 × 218.52
  4. Step 4: Simplify right side
    507.12x = 166,210.68
  5. Step 5: Solve for x
    x = 166,210.68/507.12
  6. Step 6: Final answer
    x = 327.75

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Double scale
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Similar ratio
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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.