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Finding the Fourth Proportional to 755.48, 1,134.96 and 536.64

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Solution

The fourth proportional to 755.48, 1,134.96 and 536.64 is: 806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.48 : 1,134.96 = 536.64 : x
  2. Step 2: Convert to fraction form
    755.48/1,134.96 = 536.64/x
  3. Step 3: Cross multiply
    755.48x = 1,134.96 × 536.64
  4. Step 4: Simplify right side
    755.48x = 609,069.07
  5. Step 5: Solve for x
    x = 609,069.07/755.48
  6. Step 6: Final answer
    x = 806.20

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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.