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Finding the Fourth Proportional to 746.61, 1,120.28 and 335.87

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Solution

The fourth proportional to 746.61, 1,120.28 and 335.87 is: 503.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.61 : 1,120.28 = 335.87 : x
  2. Step 2: Convert to fraction form
    746.61/1,120.28 = 335.87/x
  3. Step 3: Cross multiply
    746.61x = 1,120.28 × 335.87
  4. Step 4: Simplify right side
    746.61x = 376,261.16
  5. Step 5: Solve for x
    x = 376,261.16/746.61
  6. Step 6: Final answer
    x = 503.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.