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Finding the Fourth Proportional to 558.96, 771 and 351.84

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Solution

The fourth proportional to 558.96, 771 and 351.84 is: 485.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.96 : 771 = 351.84 : x
  2. Step 2: Convert to fraction form
    558.96/771 = 351.84/x
  3. Step 3: Cross multiply
    558.96x = 771 × 351.84
  4. Step 4: Simplify right side
    558.96x = 271,268.64
  5. Step 5: Solve for x
    x = 271,268.64/558.96
  6. Step 6: Final answer
    x = 485.31

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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.