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Finding the Fourth Proportional to 869.13, 1,198.14 and 536.98

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Solution

The fourth proportional to 869.13, 1,198.14 and 536.98 is: 740.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.13 : 1,198.14 = 536.98 : x
  2. Step 2: Convert to fraction form
    869.13/1,198.14 = 536.98/x
  3. Step 3: Cross multiply
    869.13x = 1,198.14 × 536.98
  4. Step 4: Simplify right side
    869.13x = 643,377.48
  5. Step 5: Solve for x
    x = 643,377.48/869.13
  6. Step 6: Final answer
    x = 740.25

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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.