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Finding the Fourth Proportional to 480.72, 721.44 and 336.24

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Solution

The fourth proportional to 480.72, 721.44 and 336.24 is: 504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.72 : 721.44 = 336.24 : x
  2. Step 2: Convert to fraction form
    480.72/721.44 = 336.24/x
  3. Step 3: Cross multiply
    480.72x = 721.44 × 336.24
  4. Step 4: Simplify right side
    480.72x = 242,576.99
  5. Step 5: Solve for x
    x = 242,576.99/480.72
  6. Step 6: Final answer
    x = 504.61

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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.