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Finding the Fourth Proportional to 743.91, 1,118.09 and 501.99

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Solution

The fourth proportional to 743.91, 1,118.09 and 501.99 is: 754.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.91 : 1,118.09 = 501.99 : x
  2. Step 2: Convert to fraction form
    743.91/1,118.09 = 501.99/x
  3. Step 3: Cross multiply
    743.91x = 1,118.09 × 501.99
  4. Step 4: Simplify right side
    743.91x = 561,270.00
  5. Step 5: Solve for x
    x = 561,270.00/743.91
  6. Step 6: Final answer
    x = 754.49

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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.