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Finding the Fourth Proportional to 743.29, 1,114.93 and 437.09

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Solution

The fourth proportional to 743.29, 1,114.93 and 437.09 is: 655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.29 : 1,114.93 = 437.09 : x
  2. Step 2: Convert to fraction form
    743.29/1,114.93 = 437.09/x
  3. Step 3: Cross multiply
    743.29x = 1,114.93 × 437.09
  4. Step 4: Simplify right side
    743.29x = 487,324.75
  5. Step 5: Solve for x
    x = 487,324.75/743.29
  6. Step 6: Final answer
    x = 655.63

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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.