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Finding the Fourth Proportional to 559.94, 771.87 and 427.19

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Solution

The fourth proportional to 559.94, 771.87 and 427.19 is: 588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.94 : 771.87 = 427.19 : x
  2. Step 2: Convert to fraction form
    559.94/771.87 = 427.19/x
  3. Step 3: Cross multiply
    559.94x = 771.87 × 427.19
  4. Step 4: Simplify right side
    559.94x = 329,731.29
  5. Step 5: Solve for x
    x = 329,731.29/559.94
  6. Step 6: Final answer
    x = 588.87

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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.