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Finding the Fourth Proportional to 838.29, 1,157.34 and 746.01

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Solution

The fourth proportional to 838.29, 1,157.34 and 746.01 is: 1,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    838.29 : 1,157.34 = 746.01 : x
  2. Step 2: Convert to fraction form
    838.29/1,157.34 = 746.01/x
  3. Step 3: Cross multiply
    838.29x = 1,157.34 × 746.01
  4. Step 4: Simplify right side
    838.29x = 863,387.21
  5. Step 5: Solve for x
    x = 863,387.21/838.29
  6. Step 6: Final answer
    x = 1,029.94

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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.