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Finding the Fourth Proportional to 842.99, 1,163.34 and 470.00

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Solution

The fourth proportional to 842.99, 1,163.34 and 470.00 is: 648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.99 : 1,163.34 = 470.00 : x
  2. Step 2: Convert to fraction form
    842.99/1,163.34 = 470.00/x
  3. Step 3: Cross multiply
    842.99x = 1,163.34 × 470.00
  4. Step 4: Simplify right side
    842.99x = 546,763.98
  5. Step 5: Solve for x
    x = 546,763.98/842.99
  6. Step 6: Final answer
    x = 648.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.