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Finding the Fourth Proportional to 542.94, 813.72 and 396.32

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Solution

The fourth proportional to 542.94, 813.72 and 396.32 is: 593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.94 : 813.72 = 396.32 : x
  2. Step 2: Convert to fraction form
    542.94/813.72 = 396.32/x
  3. Step 3: Cross multiply
    542.94x = 813.72 × 396.32
  4. Step 4: Simplify right side
    542.94x = 322,493.51
  5. Step 5: Solve for x
    x = 322,493.51/542.94
  6. Step 6: Final answer
    x = 593.98

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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.