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Finding the Fourth Proportional to 595.61, 822.23 and 396.78

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Solution

The fourth proportional to 595.61, 822.23 and 396.78 is: 547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.61 : 822.23 = 396.78 : x
  2. Step 2: Convert to fraction form
    595.61/822.23 = 396.78/x
  3. Step 3: Cross multiply
    595.61x = 822.23 × 396.78
  4. Step 4: Simplify right side
    595.61x = 326,240.31
  5. Step 5: Solve for x
    x = 326,240.31/595.61
  6. Step 6: Final answer
    x = 547.74

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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.