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Finding the Fourth Proportional to 558.53, 837.65 and 193.20

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Solution

The fourth proportional to 558.53, 837.65 and 193.20 is: 289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.53 : 837.65 = 193.20 : x
  2. Step 2: Convert to fraction form
    558.53/837.65 = 193.20/x
  3. Step 3: Cross multiply
    558.53x = 837.65 × 193.20
  4. Step 4: Simplify right side
    558.53x = 161,833.98
  5. Step 5: Solve for x
    x = 161,833.98/558.53
  6. Step 6: Final answer
    x = 289.75

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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.