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Finding the Fourth Proportional to 520.93, 718.83 and 299.84

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Solution

The fourth proportional to 520.93, 718.83 and 299.84 is: 413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.93 : 718.83 = 299.84 : x
  2. Step 2: Convert to fraction form
    520.93/718.83 = 299.84/x
  3. Step 3: Cross multiply
    520.93x = 718.83 × 299.84
  4. Step 4: Simplify right side
    520.93x = 215,533.99
  5. Step 5: Solve for x
    x = 215,533.99/520.93
  6. Step 6: Final answer
    x = 413.75

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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.