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Finding the Fourth Proportional to 609.66, 840.51 and 452.39

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Solution

The fourth proportional to 609.66, 840.51 and 452.39 is: 623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.66 : 840.51 = 452.39 : x
  2. Step 2: Convert to fraction form
    609.66/840.51 = 452.39/x
  3. Step 3: Cross multiply
    609.66x = 840.51 × 452.39
  4. Step 4: Simplify right side
    609.66x = 380,234.12
  5. Step 5: Solve for x
    x = 380,234.12/609.66
  6. Step 6: Final answer
    x = 623.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.