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Finding the Fourth Proportional to 506.90, 760.49 and 218.26

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Solution

The fourth proportional to 506.90, 760.49 and 218.26 is: 327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.90 : 760.49 = 218.26 : x
  2. Step 2: Convert to fraction form
    506.90/760.49 = 218.26/x
  3. Step 3: Cross multiply
    506.90x = 760.49 × 218.26
  4. Step 4: Simplify right side
    506.90x = 165,984.55
  5. Step 5: Solve for x
    x = 165,984.55/506.90
  6. Step 6: Final answer
    x = 327.45

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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.