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Finding the Fourth Proportional to 407.97, 610.58 and 343.05

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Solution

The fourth proportional to 407.97, 610.58 and 343.05 is: 513.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.97 : 610.58 = 343.05 : x
  2. Step 2: Convert to fraction form
    407.97/610.58 = 343.05/x
  3. Step 3: Cross multiply
    407.97x = 610.58 × 343.05
  4. Step 4: Simplify right side
    407.97x = 209,457.75
  5. Step 5: Solve for x
    x = 209,457.75/407.97
  6. Step 6: Final answer
    x = 513.41

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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.