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Finding the Fourth Proportional to 575.02, 861.72 and 343.63

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Solution

The fourth proportional to 575.02, 861.72 and 343.63 is: 514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.02 : 861.72 = 343.63 : x
  2. Step 2: Convert to fraction form
    575.02/861.72 = 343.63/x
  3. Step 3: Cross multiply
    575.02x = 861.72 × 343.63
  4. Step 4: Simplify right side
    575.02x = 296,112.84
  5. Step 5: Solve for x
    x = 296,112.84/575.02
  6. Step 6: Final answer
    x = 514.96

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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.