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Finding the Fourth Proportional to 522.99, 721.38 and 336.72

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Solution

The fourth proportional to 522.99, 721.38 and 336.72 is: 464.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.99 : 721.38 = 336.72 : x
  2. Step 2: Convert to fraction form
    522.99/721.38 = 336.72/x
  3. Step 3: Cross multiply
    522.99x = 721.38 × 336.72
  4. Step 4: Simplify right side
    522.99x = 242,899.47
  5. Step 5: Solve for x
    x = 242,899.47/522.99
  6. Step 6: Final answer
    x = 464.44

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Double scale
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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.