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Finding the Fourth Proportional to 559.31, 835.38 and 436.25

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Solution

The fourth proportional to 559.31, 835.38 and 436.25 is: 651.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.31 : 835.38 = 436.25 : x
  2. Step 2: Convert to fraction form
    559.31/835.38 = 436.25/x
  3. Step 3: Cross multiply
    559.31x = 835.38 × 436.25
  4. Step 4: Simplify right side
    559.31x = 364,436.61
  5. Step 5: Solve for x
    x = 364,436.61/559.31
  6. Step 6: Final answer
    x = 651.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.