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Finding the Fourth Proportional to 578.33, 867.95 and 347.48

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Solution

The fourth proportional to 578.33, 867.95 and 347.48 is: 521.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.33 : 867.95 = 347.48 : x
  2. Step 2: Convert to fraction form
    578.33/867.95 = 347.48/x
  3. Step 3: Cross multiply
    578.33x = 867.95 × 347.48
  4. Step 4: Simplify right side
    578.33x = 301,589.19
  5. Step 5: Solve for x
    x = 301,589.19/578.33
  6. Step 6: Final answer
    x = 521.49

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Half scale
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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.