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Finding the Fourth Proportional to 578.60, 867.26 and 270.53

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Solution

The fourth proportional to 578.60, 867.26 and 270.53 is: 405.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.60 : 867.26 = 270.53 : x
  2. Step 2: Convert to fraction form
    578.60/867.26 = 270.53/x
  3. Step 3: Cross multiply
    578.60x = 867.26 × 270.53
  4. Step 4: Simplify right side
    578.60x = 234,618.50
  5. Step 5: Solve for x
    x = 234,618.50/578.60
  6. Step 6: Final answer
    x = 405.49

Related Problems

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Half scale
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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.