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Finding the Fourth Proportional to 562.38, 843.58 and 440.72

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Solution

The fourth proportional to 562.38, 843.58 and 440.72 is: 661.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.38 : 843.58 = 440.72 : x
  2. Step 2: Convert to fraction form
    562.38/843.58 = 440.72/x
  3. Step 3: Cross multiply
    562.38x = 843.58 × 440.72
  4. Step 4: Simplify right side
    562.38x = 371,782.58
  5. Step 5: Solve for x
    x = 371,782.58/562.38
  6. Step 6: Final answer
    x = 661.09

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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.