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Finding the Fourth Proportional to 595.38, 821.72 and 579.78

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Solution

The fourth proportional to 595.38, 821.72 and 579.78 is: 800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.38 : 821.72 = 579.78 : x
  2. Step 2: Convert to fraction form
    595.38/821.72 = 579.78/x
  3. Step 3: Cross multiply
    595.38x = 821.72 × 579.78
  4. Step 4: Simplify right side
    595.38x = 476,416.82
  5. Step 5: Solve for x
    x = 476,416.82/595.38
  6. Step 6: Final answer
    x = 800.19

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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.