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Finding the Fourth Proportional to 513.82, 769.08 and 436.06

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Solution

The fourth proportional to 513.82, 769.08 and 436.06 is: 652.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.82 : 769.08 = 436.06 : x
  2. Step 2: Convert to fraction form
    513.82/769.08 = 436.06/x
  3. Step 3: Cross multiply
    513.82x = 769.08 × 436.06
  4. Step 4: Simplify right side
    513.82x = 335,365.02
  5. Step 5: Solve for x
    x = 335,365.02/513.82
  6. Step 6: Final answer
    x = 652.69

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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.