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Finding the Fourth Proportional to 562.96, 845.23 and 389.21

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Solution

The fourth proportional to 562.96, 845.23 and 389.21 is: 584.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.96 : 845.23 = 389.21 : x
  2. Step 2: Convert to fraction form
    562.96/845.23 = 389.21/x
  3. Step 3: Cross multiply
    562.96x = 845.23 × 389.21
  4. Step 4: Simplify right side
    562.96x = 328,967.74
  5. Step 5: Solve for x
    x = 328,967.74/562.96
  6. Step 6: Final answer
    x = 584.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.