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Finding the Fourth Proportional to 558.27, 837.90 and 284.54

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Solution

The fourth proportional to 558.27, 837.90 and 284.54 is: 427.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.27 : 837.90 = 284.54 : x
  2. Step 2: Convert to fraction form
    558.27/837.90 = 284.54/x
  3. Step 3: Cross multiply
    558.27x = 837.90 × 284.54
  4. Step 4: Simplify right side
    558.27x = 238,411.88
  5. Step 5: Solve for x
    x = 238,411.88/558.27
  6. Step 6: Final answer
    x = 427.05

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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.