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Finding the Fourth Proportional to 522.01, 720.78 and 374.99

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Solution

The fourth proportional to 522.01, 720.78 and 374.99 is: 517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.01 : 720.78 = 374.99 : x
  2. Step 2: Convert to fraction form
    522.01/720.78 = 374.99/x
  3. Step 3: Cross multiply
    522.01x = 720.78 × 374.99
  4. Step 4: Simplify right side
    522.01x = 270,285.29
  5. Step 5: Solve for x
    x = 270,285.29/522.01
  6. Step 6: Final answer
    x = 517.78

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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.