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Finding the Fourth Proportional to 594.51, 820.86 and 398.49

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Solution

The fourth proportional to 594.51, 820.86 and 398.49 is: 550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.51 : 820.86 = 398.49 : x
  2. Step 2: Convert to fraction form
    594.51/820.86 = 398.49/x
  3. Step 3: Cross multiply
    594.51x = 820.86 × 398.49
  4. Step 4: Simplify right side
    594.51x = 327,104.50
  5. Step 5: Solve for x
    x = 327,104.50/594.51
  6. Step 6: Final answer
    x = 550.21

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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.