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Finding the Fourth Proportional to 558.18, 837.27 and 314.91

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Solution

The fourth proportional to 558.18, 837.27 and 314.91 is: 472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.18 : 837.27 = 314.91 : x
  2. Step 2: Convert to fraction form
    558.18/837.27 = 314.91/x
  3. Step 3: Cross multiply
    558.18x = 837.27 × 314.91
  4. Step 4: Simplify right side
    558.18x = 263,664.70
  5. Step 5: Solve for x
    x = 263,664.70/558.18
  6. Step 6: Final answer
    x = 472.37

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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.