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Finding the Fourth Proportional to 595.13, 820.79 and 447.51

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Solution

The fourth proportional to 595.13, 820.79 and 447.51 is: 617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.13 : 820.79 = 447.51 : x
  2. Step 2: Convert to fraction form
    595.13/820.79 = 447.51/x
  3. Step 3: Cross multiply
    595.13x = 820.79 × 447.51
  4. Step 4: Simplify right side
    595.13x = 367,311.73
  5. Step 5: Solve for x
    x = 367,311.73/595.13
  6. Step 6: Final answer
    x = 617.20

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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.