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Finding the Fourth Proportional to 746.84, 1,023.15 and 719.15

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Solution

The fourth proportional to 746.84, 1,023.15 and 719.15 is: 985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.84 : 1,023.15 = 719.15 : x
  2. Step 2: Convert to fraction form
    746.84/1,023.15 = 719.15/x
  3. Step 3: Cross multiply
    746.84x = 1,023.15 × 719.15
  4. Step 4: Simplify right side
    746.84x = 735,793.21
  5. Step 5: Solve for x
    x = 735,793.21/746.84
  6. Step 6: Final answer
    x = 985.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.