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Finding the Fourth Proportional to 609.50, 912.36 and 402.68

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Solution

The fourth proportional to 609.50, 912.36 and 402.68 is: 602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.50 : 912.36 = 402.68 : x
  2. Step 2: Convert to fraction form
    609.50/912.36 = 402.68/x
  3. Step 3: Cross multiply
    609.50x = 912.36 × 402.68
  4. Step 4: Simplify right side
    609.50x = 367,389.12
  5. Step 5: Solve for x
    x = 367,389.12/609.50
  6. Step 6: Final answer
    x = 602.77

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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.