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Finding the Fourth Proportional to 751.11, 1,036.56 and 436.42

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Solution

The fourth proportional to 751.11, 1,036.56 and 436.42 is: 602.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.11 : 1,036.56 = 436.42 : x
  2. Step 2: Convert to fraction form
    751.11/1,036.56 = 436.42/x
  3. Step 3: Cross multiply
    751.11x = 1,036.56 × 436.42
  4. Step 4: Simplify right side
    751.11x = 452,375.52
  5. Step 5: Solve for x
    x = 452,375.52/751.11
  6. Step 6: Final answer
    x = 602.28

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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.