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Finding the Fourth Proportional to 522.39, 720.40 and 335.94

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Solution

The fourth proportional to 522.39, 720.40 and 335.94 is: 463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.39 : 720.40 = 335.94 : x
  2. Step 2: Convert to fraction form
    522.39/720.40 = 335.94/x
  3. Step 3: Cross multiply
    522.39x = 720.40 × 335.94
  4. Step 4: Simplify right side
    522.39x = 242,011.18
  5. Step 5: Solve for x
    x = 242,011.18/522.39
  6. Step 6: Final answer
    x = 463.28

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Double scale
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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.