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Finding the Third Proportional to 430.95 and 609.29

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Solution

The third proportional to 430.95 and 609.29 is: 861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.95 : 609.29 = 609.29 : x
  2. Step 2: Convert to fraction form
    430.95/609.29 = 609.29/x
  3. Step 3: Cross multiply
    430.95x = 609.29 × 609.29
  4. Step 4: Simplify right side
    430.95x = 371,237.92
  5. Step 5: Solve for x
    x = 371,237.92/430.95
  6. Step 6: Final answer
    x = 861.45

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.