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Finding the Fourth Proportional to 615.60, 845.37 and 517.19

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Solution

The fourth proportional to 615.60, 845.37 and 517.19 is: 710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.60 : 845.37 = 517.19 : x
  2. Step 2: Convert to fraction form
    615.60/845.37 = 517.19/x
  3. Step 3: Cross multiply
    615.60x = 845.37 × 517.19
  4. Step 4: Simplify right side
    615.60x = 437,212.68
  5. Step 5: Solve for x
    x = 437,212.68/615.60
  6. Step 6: Final answer
    x = 710.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.