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Finding the Fourth Proportional to 866.06, 1,195.11 and 492.99

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Solution

The fourth proportional to 866.06, 1,195.11 and 492.99 is: 680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.06 : 1,195.11 = 492.99 : x
  2. Step 2: Convert to fraction form
    866.06/1,195.11 = 492.99/x
  3. Step 3: Cross multiply
    866.06x = 1,195.11 × 492.99
  4. Step 4: Simplify right side
    866.06x = 589,174.81
  5. Step 5: Solve for x
    x = 589,174.81/866.06
  6. Step 6: Final answer
    x = 680.29

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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.