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Finding the Fourth Proportional to 558.91, 771.32 and 372.10

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Solution

The fourth proportional to 558.91, 771.32 and 372.10 is: 513.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.91 : 771.32 = 372.10 : x
  2. Step 2: Convert to fraction form
    558.91/771.32 = 372.10/x
  3. Step 3: Cross multiply
    558.91x = 771.32 × 372.10
  4. Step 4: Simplify right side
    558.91x = 287,008.17
  5. Step 5: Solve for x
    x = 287,008.17/558.91
  6. Step 6: Final answer
    x = 513.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.