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Finding the Fourth Proportional to 773.61, 1,154.90 and 741.21

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Solution

The fourth proportional to 773.61, 1,154.90 and 741.21 is: 1,106.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.61 : 1,154.90 = 741.21 : x
  2. Step 2: Convert to fraction form
    773.61/1,154.90 = 741.21/x
  3. Step 3: Cross multiply
    773.61x = 1,154.90 × 741.21
  4. Step 4: Simplify right side
    773.61x = 856,023.43
  5. Step 5: Solve for x
    x = 856,023.43/773.61
  6. Step 6: Final answer
    x = 1,106.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.