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Finding the Fourth Proportional to 609.40, 914.40 and 463.10

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Solution

The fourth proportional to 609.40, 914.40 and 463.10 is: 694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.40 : 914.40 = 463.10 : x
  2. Step 2: Convert to fraction form
    609.40/914.40 = 463.10/x
  3. Step 3: Cross multiply
    609.40x = 914.40 × 463.10
  4. Step 4: Simplify right side
    609.40x = 423,458.64
  5. Step 5: Solve for x
    x = 423,458.64/609.40
  6. Step 6: Final answer
    x = 694.88

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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.