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Finding the Fourth Proportional to 773.44, 1,066.54 and 537.65

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Solution

The fourth proportional to 773.44, 1,066.54 and 537.65 is: 741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.44 : 1,066.54 = 537.65 : x
  2. Step 2: Convert to fraction form
    773.44/1,066.54 = 537.65/x
  3. Step 3: Cross multiply
    773.44x = 1,066.54 × 537.65
  4. Step 4: Simplify right side
    773.44x = 573,429.56
  5. Step 5: Solve for x
    x = 573,429.56/773.44
  6. Step 6: Final answer
    x = 741.40

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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.