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Finding the Fourth Proportional to 564.87, 779.73 and 354.98

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Solution

The fourth proportional to 564.87, 779.73 and 354.98 is: 490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.87 : 779.73 = 354.98 : x
  2. Step 2: Convert to fraction form
    564.87/779.73 = 354.98/x
  3. Step 3: Cross multiply
    564.87x = 779.73 × 354.98
  4. Step 4: Simplify right side
    564.87x = 276,789.17
  5. Step 5: Solve for x
    x = 276,789.17/564.87
  6. Step 6: Final answer
    x = 490.00

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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.