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Finding the Fourth Proportional to 609.94, 840.99 and 377.02

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Solution

The fourth proportional to 609.94, 840.99 and 377.02 is: 519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.94 : 840.99 = 377.02 : x
  2. Step 2: Convert to fraction form
    609.94/840.99 = 377.02/x
  3. Step 3: Cross multiply
    609.94x = 840.99 × 377.02
  4. Step 4: Simplify right side
    609.94x = 317,070.05
  5. Step 5: Solve for x
    x = 317,070.05/609.94
  6. Step 6: Final answer
    x = 519.84

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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.