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Finding the Fourth Proportional to 520.06, 778.92 and 433.18

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Solution

The fourth proportional to 520.06, 778.92 and 433.18 is: 648.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.06 : 778.92 = 433.18 : x
  2. Step 2: Convert to fraction form
    520.06/778.92 = 433.18/x
  3. Step 3: Cross multiply
    520.06x = 778.92 × 433.18
  4. Step 4: Simplify right side
    520.06x = 337,412.57
  5. Step 5: Solve for x
    x = 337,412.57/520.06
  6. Step 6: Final answer
    x = 648.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.