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Finding the Fourth Proportional to 522.69, 720.99 and 375.36

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Solution

The fourth proportional to 522.69, 720.99 and 375.36 is: 517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.69 : 720.99 = 375.36 : x
  2. Step 2: Convert to fraction form
    522.69/720.99 = 375.36/x
  3. Step 3: Cross multiply
    522.69x = 720.99 × 375.36
  4. Step 4: Simplify right side
    522.69x = 270,630.81
  5. Step 5: Solve for x
    x = 270,630.81/522.69
  6. Step 6: Final answer
    x = 517.77

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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.