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Finding the Fourth Proportional to 573.60, 861.96 and 313.80

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Solution

The fourth proportional to 573.60, 861.96 and 313.80 is: 471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.60 : 861.96 = 313.80 : x
  2. Step 2: Convert to fraction form
    573.60/861.96 = 313.80/x
  3. Step 3: Cross multiply
    573.60x = 861.96 × 313.80
  4. Step 4: Simplify right side
    573.60x = 270,483.05
  5. Step 5: Solve for x
    x = 270,483.05/573.60
  6. Step 6: Final answer
    x = 471.55

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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.