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Finding the Fourth Proportional to 442.24, 610.25 and 255.69

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Solution

The fourth proportional to 442.24, 610.25 and 255.69 is: 352.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.24 : 610.25 = 255.69 : x
  2. Step 2: Convert to fraction form
    442.24/610.25 = 255.69/x
  3. Step 3: Cross multiply
    442.24x = 610.25 × 255.69
  4. Step 4: Simplify right side
    442.24x = 156,033.54
  5. Step 5: Solve for x
    x = 156,033.54/442.24
  6. Step 6: Final answer
    x = 352.83

Related Problems

Find fourth proportional to 221.12, 305.12 and 127.85
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.