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Finding the Fourth Proportional to 1,149.16, 1,723.42 and 465

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Solution

The fourth proportional to 1,149.16, 1,723.42 and 465 is: 697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.16 : 1,723.42 = 465 : x
  2. Step 2: Convert to fraction form
    1,149.16/1,723.42 = 465/x
  3. Step 3: Cross multiply
    1,149.16x = 1,723.42 × 465
  4. Step 4: Simplify right side
    1,149.16x = 801,390.30
  5. Step 5: Solve for x
    x = 801,390.30/1,149.16
  6. Step 6: Final answer
    x = 697.37

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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.