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Finding the Fourth Proportional to 804.50, 1,109.27 and 627.27

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Solution

The fourth proportional to 804.50, 1,109.27 and 627.27 is: 864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.50 : 1,109.27 = 627.27 : x
  2. Step 2: Convert to fraction form
    804.50/1,109.27 = 627.27/x
  3. Step 3: Cross multiply
    804.50x = 1,109.27 × 627.27
  4. Step 4: Simplify right side
    804.50x = 695,803.11
  5. Step 5: Solve for x
    x = 695,803.11/804.50
  6. Step 6: Final answer
    x = 864.89

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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.