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Finding the Fourth Proportional to 522.72, 720.77 and 373.41

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Solution

The fourth proportional to 522.72, 720.77 and 373.41 is: 514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.72 : 720.77 = 373.41 : x
  2. Step 2: Convert to fraction form
    522.72/720.77 = 373.41/x
  3. Step 3: Cross multiply
    522.72x = 720.77 × 373.41
  4. Step 4: Simplify right side
    522.72x = 269,140.86
  5. Step 5: Solve for x
    x = 269,140.86/522.72
  6. Step 6: Final answer
    x = 514.89

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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.