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Finding the Fourth Proportional to 706.66, 974.62 and 628.04

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Solution

The fourth proportional to 706.66, 974.62 and 628.04 is: 866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.66 : 974.62 = 628.04 : x
  2. Step 2: Convert to fraction form
    706.66/974.62 = 628.04/x
  3. Step 3: Cross multiply
    706.66x = 974.62 × 628.04
  4. Step 4: Simplify right side
    706.66x = 612,100.34
  5. Step 5: Solve for x
    x = 612,100.34/706.66
  6. Step 6: Final answer
    x = 866.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.