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Finding the Fourth Proportional to 557.82, 836.73 and 328.31

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Solution

The fourth proportional to 557.82, 836.73 and 328.31 is: 492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.82 : 836.73 = 328.31 : x
  2. Step 2: Convert to fraction form
    557.82/836.73 = 328.31/x
  3. Step 3: Cross multiply
    557.82x = 836.73 × 328.31
  4. Step 4: Simplify right side
    557.82x = 274,701.00
  5. Step 5: Solve for x
    x = 274,701.00/557.82
  6. Step 6: Final answer
    x = 492.45

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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.