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Finding the Fourth Proportional to 535.56, 738.72 and 418.92

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Solution

The fourth proportional to 535.56, 738.72 and 418.92 is: 577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.56 : 738.72 = 418.92 : x
  2. Step 2: Convert to fraction form
    535.56/738.72 = 418.92/x
  3. Step 3: Cross multiply
    535.56x = 738.72 × 418.92
  4. Step 4: Simplify right side
    535.56x = 309,464.58
  5. Step 5: Solve for x
    x = 309,464.58/535.56
  6. Step 6: Final answer
    x = 577.83

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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.