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Finding the Fourth Proportional to 717.04, 1,074.84 and 630.64

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Solution

The fourth proportional to 717.04, 1,074.84 and 630.64 is: 945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.04 : 1,074.84 = 630.64 : x
  2. Step 2: Convert to fraction form
    717.04/1,074.84 = 630.64/x
  3. Step 3: Cross multiply
    717.04x = 1,074.84 × 630.64
  4. Step 4: Simplify right side
    717.04x = 677,837.10
  5. Step 5: Solve for x
    x = 677,837.10/717.04
  6. Step 6: Final answer
    x = 945.33

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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.