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Finding the Fourth Proportional to 558.85, 770.37 and 440.62

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Solution

The fourth proportional to 558.85, 770.37 and 440.62 is: 607.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.85 : 770.37 = 440.62 : x
  2. Step 2: Convert to fraction form
    558.85/770.37 = 440.62/x
  3. Step 3: Cross multiply
    558.85x = 770.37 × 440.62
  4. Step 4: Simplify right side
    558.85x = 339,440.43
  5. Step 5: Solve for x
    x = 339,440.43/558.85
  6. Step 6: Final answer
    x = 607.39

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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.