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Finding the Fourth Proportional to 522.80, 784.34 and 262.79

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Solution

The fourth proportional to 522.80, 784.34 and 262.79 is: 394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.80 : 784.34 = 262.79 : x
  2. Step 2: Convert to fraction form
    522.80/784.34 = 262.79/x
  3. Step 3: Cross multiply
    522.80x = 784.34 × 262.79
  4. Step 4: Simplify right side
    522.80x = 206,116.71
  5. Step 5: Solve for x
    x = 206,116.71/522.80
  6. Step 6: Final answer
    x = 394.26

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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.