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Finding the Fourth Proportional to 573.20, 861.60 and 562.40

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Solution

The fourth proportional to 573.20, 861.60 and 562.40 is: 845.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.20 : 861.60 = 562.40 : x
  2. Step 2: Convert to fraction form
    573.20/861.60 = 562.40/x
  3. Step 3: Cross multiply
    573.20x = 861.60 × 562.40
  4. Step 4: Simplify right side
    573.20x = 484,563.84
  5. Step 5: Solve for x
    x = 484,563.84/573.20
  6. Step 6: Final answer
    x = 845.37

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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.