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Finding the Fourth Proportional to 605.20, 907.35 and 331.60

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Solution

The fourth proportional to 605.20, 907.35 and 331.60 is: 497.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.20 : 907.35 = 331.60 : x
  2. Step 2: Convert to fraction form
    605.20/907.35 = 331.60/x
  3. Step 3: Cross multiply
    605.20x = 907.35 × 331.60
  4. Step 4: Simplify right side
    605.20x = 300,877.26
  5. Step 5: Solve for x
    x = 300,877.26/605.20
  6. Step 6: Final answer
    x = 497.15

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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.