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Finding the Fourth Proportional to 578.53, 867.26 and 231.80

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Solution

The fourth proportional to 578.53, 867.26 and 231.80 is: 347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.53 : 867.26 = 231.80 : x
  2. Step 2: Convert to fraction form
    578.53/867.26 = 231.80/x
  3. Step 3: Cross multiply
    578.53x = 867.26 × 231.80
  4. Step 4: Simplify right side
    578.53x = 201,030.87
  5. Step 5: Solve for x
    x = 201,030.87/578.53
  6. Step 6: Final answer
    x = 347.49

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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.