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Finding the Fourth Proportional to 614.25, 845.10 and 531.09

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Solution

The fourth proportional to 614.25, 845.10 and 531.09 is: 730.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.25 : 845.10 = 531.09 : x
  2. Step 2: Convert to fraction form
    614.25/845.10 = 531.09/x
  3. Step 3: Cross multiply
    614.25x = 845.10 × 531.09
  4. Step 4: Simplify right side
    614.25x = 448,824.16
  5. Step 5: Solve for x
    x = 448,824.16/614.25
  6. Step 6: Final answer
    x = 730.69

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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.