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Finding the Fourth Proportional to 747.26, 1,119.51 and 376.64

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Solution

The fourth proportional to 747.26, 1,119.51 and 376.64 is: 564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.26 : 1,119.51 = 376.64 : x
  2. Step 2: Convert to fraction form
    747.26/1,119.51 = 376.64/x
  3. Step 3: Cross multiply
    747.26x = 1,119.51 × 376.64
  4. Step 4: Simplify right side
    747.26x = 421,646.65
  5. Step 5: Solve for x
    x = 421,646.65/747.26
  6. Step 6: Final answer
    x = 564.26

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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.