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Finding the Fourth Proportional to 558.46, 837.61 and 147.63

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Solution

The fourth proportional to 558.46, 837.61 and 147.63 is: 221.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.46 : 837.61 = 147.63 : x
  2. Step 2: Convert to fraction form
    558.46/837.61 = 147.63/x
  3. Step 3: Cross multiply
    558.46x = 837.61 × 147.63
  4. Step 4: Simplify right side
    558.46x = 123,656.36
  5. Step 5: Solve for x
    x = 123,656.36/558.46
  6. Step 6: Final answer
    x = 221.42

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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.