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Finding the Fourth Proportional to 1,553.22, 2,329.47 and 457.29

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Solution

The fourth proportional to 1,553.22, 2,329.47 and 457.29 is: 685.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.22 : 2,329.47 = 457.29 : x
  2. Step 2: Convert to fraction form
    1,553.22/2,329.47 = 457.29/x
  3. Step 3: Cross multiply
    1,553.22x = 2,329.47 × 457.29
  4. Step 4: Simplify right side
    1,553.22x = 1,065,243.34
  5. Step 5: Solve for x
    x = 1,065,243.34/1,553.22
  6. Step 6: Final answer
    x = 685.83

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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.