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Finding the Fourth Proportional to 717.20, 1,074.84 and 473.36

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Solution

The fourth proportional to 717.20, 1,074.84 and 473.36 is: 709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.20 : 1,074.84 = 473.36 : x
  2. Step 2: Convert to fraction form
    717.20/1,074.84 = 473.36/x
  3. Step 3: Cross multiply
    717.20x = 1,074.84 × 473.36
  4. Step 4: Simplify right side
    717.20x = 508,786.26
  5. Step 5: Solve for x
    x = 508,786.26/717.20
  6. Step 6: Final answer
    x = 709.41

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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.