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Finding the Fourth Proportional to 849.06, 1,171.95 and 538.74

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Solution

The fourth proportional to 849.06, 1,171.95 and 538.74 is: 743.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.06 : 1,171.95 = 538.74 : x
  2. Step 2: Convert to fraction form
    849.06/1,171.95 = 538.74/x
  3. Step 3: Cross multiply
    849.06x = 1,171.95 × 538.74
  4. Step 4: Simplify right side
    849.06x = 631,376.34
  5. Step 5: Solve for x
    x = 631,376.34/849.06
  6. Step 6: Final answer
    x = 743.62

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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.