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Finding the Fourth Proportional to 520.41, 718.29 and 299.49

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Solution

The fourth proportional to 520.41, 718.29 and 299.49 is: 413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.41 : 718.29 = 299.49 : x
  2. Step 2: Convert to fraction form
    520.41/718.29 = 299.49/x
  3. Step 3: Cross multiply
    520.41x = 718.29 × 299.49
  4. Step 4: Simplify right side
    520.41x = 215,120.67
  5. Step 5: Solve for x
    x = 215,120.67/520.41
  6. Step 6: Final answer
    x = 413.37

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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.