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Finding the Fourth Proportional to 613.21, 917.76 and 562.63

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Solution

The fourth proportional to 613.21, 917.76 and 562.63 is: 842.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.21 : 917.76 = 562.63 : x
  2. Step 2: Convert to fraction form
    613.21/917.76 = 562.63/x
  3. Step 3: Cross multiply
    613.21x = 917.76 × 562.63
  4. Step 4: Simplify right side
    613.21x = 516,359.31
  5. Step 5: Solve for x
    x = 516,359.31/613.21
  6. Step 6: Final answer
    x = 842.06

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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.