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Finding the Fourth Proportional to 558.45, 770.31 and 337.26

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Solution

The fourth proportional to 558.45, 770.31 and 337.26 is: 465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.45 : 770.31 = 337.26 : x
  2. Step 2: Convert to fraction form
    558.45/770.31 = 337.26/x
  3. Step 3: Cross multiply
    558.45x = 770.31 × 337.26
  4. Step 4: Simplify right side
    558.45x = 259,794.75
  5. Step 5: Solve for x
    x = 259,794.75/558.45
  6. Step 6: Final answer
    x = 465.21

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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.