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Finding the Fourth Proportional to 594.72, 821.93 and 447.30

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Solution

The fourth proportional to 594.72, 821.93 and 447.30 is: 618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.72 : 821.93 = 447.30 : x
  2. Step 2: Convert to fraction form
    594.72/821.93 = 447.30/x
  3. Step 3: Cross multiply
    594.72x = 821.93 × 447.30
  4. Step 4: Simplify right side
    594.72x = 367,647.05
  5. Step 5: Solve for x
    x = 367,647.05/594.72
  6. Step 6: Final answer
    x = 618.19

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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.