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Finding the Fourth Proportional to 609.51, 914.63 and 301.40

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Solution

The fourth proportional to 609.51, 914.63 and 301.40 is: 452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.51 : 914.63 = 301.40 : x
  2. Step 2: Convert to fraction form
    609.51/914.63 = 301.40/x
  3. Step 3: Cross multiply
    609.51x = 914.63 × 301.40
  4. Step 4: Simplify right side
    609.51x = 275,663.40
  5. Step 5: Solve for x
    x = 275,663.40/609.51
  6. Step 6: Final answer
    x = 452.27

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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.