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Finding the Fourth Proportional to 522.92, 721.28 and 336.65

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Solution

The fourth proportional to 522.92, 721.28 and 336.65 is: 464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.92 : 721.28 = 336.65 : x
  2. Step 2: Convert to fraction form
    522.92/721.28 = 336.65/x
  3. Step 3: Cross multiply
    522.92x = 721.28 × 336.65
  4. Step 4: Simplify right side
    522.92x = 242,813.62
  5. Step 5: Solve for x
    x = 242,813.62/522.92
  6. Step 6: Final answer
    x = 464.34

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.