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Finding the Fourth Proportional to 520.71, 718.35 and 299.54

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Solution

The fourth proportional to 520.71, 718.35 and 299.54 is: 413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.71 : 718.35 = 299.54 : x
  2. Step 2: Convert to fraction form
    520.71/718.35 = 299.54/x
  3. Step 3: Cross multiply
    520.71x = 718.35 × 299.54
  4. Step 4: Simplify right side
    520.71x = 215,170.97
  5. Step 5: Solve for x
    x = 215,170.97/520.71
  6. Step 6: Final answer
    x = 413.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.