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Finding the Fourth Proportional to 609.31, 914.36 and 284.70

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Solution

The fourth proportional to 609.31, 914.36 and 284.70 is: 427.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.31 : 914.36 = 284.70 : x
  2. Step 2: Convert to fraction form
    609.31/914.36 = 284.70/x
  3. Step 3: Cross multiply
    609.31x = 914.36 × 284.70
  4. Step 4: Simplify right side
    609.31x = 260,316.72
  5. Step 5: Solve for x
    x = 260,316.72/609.31
  6. Step 6: Final answer
    x = 427.24

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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.