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Finding the Fourth Proportional to 558.60, 838.20 and 250.75

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Solution

The fourth proportional to 558.60, 838.20 and 250.75 is: 376.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.60 : 838.20 = 250.75 : x
  2. Step 2: Convert to fraction form
    558.60/838.20 = 250.75/x
  3. Step 3: Cross multiply
    558.60x = 838.20 × 250.75
  4. Step 4: Simplify right side
    558.60x = 210,174.51
  5. Step 5: Solve for x
    x = 210,174.51/558.60
  6. Step 6: Final answer
    x = 376.25

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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.