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Finding the Fourth Proportional to 557.89, 836.82 and 436.25

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Solution

The fourth proportional to 557.89, 836.82 and 436.25 is: 654.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.89 : 836.82 = 436.25 : x
  2. Step 2: Convert to fraction form
    557.89/836.82 = 436.25/x
  3. Step 3: Cross multiply
    557.89x = 836.82 × 436.25
  4. Step 4: Simplify right side
    557.89x = 365,063.82
  5. Step 5: Solve for x
    x = 365,063.82/557.89
  6. Step 6: Final answer
    x = 654.37

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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.