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Finding the Fourth Proportional to 746.98, 1,120.02 and 357.10

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Solution

The fourth proportional to 746.98, 1,120.02 and 357.10 is: 535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.98 : 1,120.02 = 357.10 : x
  2. Step 2: Convert to fraction form
    746.98/1,120.02 = 357.10/x
  3. Step 3: Cross multiply
    746.98x = 1,120.02 × 357.10
  4. Step 4: Simplify right side
    746.98x = 399,959.14
  5. Step 5: Solve for x
    x = 399,959.14/746.98
  6. Step 6: Final answer
    x = 535.43

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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.