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Finding the Fourth Proportional to 751.44, 1,036.81 and 436.62

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Solution

The fourth proportional to 751.44, 1,036.81 and 436.62 is: 602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.44 : 1,036.81 = 436.62 : x
  2. Step 2: Convert to fraction form
    751.44/1,036.81 = 436.62/x
  3. Step 3: Cross multiply
    751.44x = 1,036.81 × 436.62
  4. Step 4: Simplify right side
    751.44x = 452,691.98
  5. Step 5: Solve for x
    x = 452,691.98/751.44
  6. Step 6: Final answer
    x = 602.43

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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.