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Finding the Fourth Proportional to 609.02, 913.55 and 577.43

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Solution

The fourth proportional to 609.02, 913.55 and 577.43 is: 866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.02 : 913.55 = 577.43 : x
  2. Step 2: Convert to fraction form
    609.02/913.55 = 577.43/x
  3. Step 3: Cross multiply
    609.02x = 913.55 × 577.43
  4. Step 4: Simplify right side
    609.02x = 527,503.72
  5. Step 5: Solve for x
    x = 527,503.72/609.02
  6. Step 6: Final answer
    x = 866.16

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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.