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Finding the Fourth Proportional to 829.17, 1,143.45 and 534.60

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Solution

The fourth proportional to 829.17, 1,143.45 and 534.60 is: 737.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.17 : 1,143.45 = 534.60 : x
  2. Step 2: Convert to fraction form
    829.17/1,143.45 = 534.60/x
  3. Step 3: Cross multiply
    829.17x = 1,143.45 × 534.60
  4. Step 4: Simplify right side
    829.17x = 611,288.37
  5. Step 5: Solve for x
    x = 611,288.37/829.17
  6. Step 6: Final answer
    x = 737.23

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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.