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Finding the Fourth Proportional to 843.51, 1,164.15 and 511.95

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Solution

The fourth proportional to 843.51, 1,164.15 and 511.95 is: 706.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.51 : 1,164.15 = 511.95 : x
  2. Step 2: Convert to fraction form
    843.51/1,164.15 = 511.95/x
  3. Step 3: Cross multiply
    843.51x = 1,164.15 × 511.95
  4. Step 4: Simplify right side
    843.51x = 595,986.59
  5. Step 5: Solve for x
    x = 595,986.59/843.51
  6. Step 6: Final answer
    x = 706.56

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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.