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Finding the Fourth Proportional to 768.22, 1,061.31 and 536.02

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Solution

The fourth proportional to 768.22, 1,061.31 and 536.02 is: 740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.22 : 1,061.31 = 536.02 : x
  2. Step 2: Convert to fraction form
    768.22/1,061.31 = 536.02/x
  3. Step 3: Cross multiply
    768.22x = 1,061.31 × 536.02
  4. Step 4: Simplify right side
    768.22x = 568,883.39
  5. Step 5: Solve for x
    x = 568,883.39/768.22
  6. Step 6: Final answer
    x = 740.52

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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.