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Finding the Fourth Proportional to 609.10, 840.71 and 360.63

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Solution

The fourth proportional to 609.10, 840.71 and 360.63 is: 497.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.10 : 840.71 = 360.63 : x
  2. Step 2: Convert to fraction form
    609.10/840.71 = 360.63/x
  3. Step 3: Cross multiply
    609.10x = 840.71 × 360.63
  4. Step 4: Simplify right side
    609.10x = 303,185.25
  5. Step 5: Solve for x
    x = 303,185.25/609.10
  6. Step 6: Final answer
    x = 497.76

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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.