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Finding the Fourth Proportional to 747.56, 1,121.44 and 377.36

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Solution

The fourth proportional to 747.56, 1,121.44 and 377.36 is: 566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.56 : 1,121.44 = 377.36 : x
  2. Step 2: Convert to fraction form
    747.56/1,121.44 = 377.36/x
  3. Step 3: Cross multiply
    747.56x = 1,121.44 × 377.36
  4. Step 4: Simplify right side
    747.56x = 423,181.46
  5. Step 5: Solve for x
    x = 423,181.46/747.56
  6. Step 6: Final answer
    x = 566.09

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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.