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Finding the Fourth Proportional to 706.63, 975.26 and 556.91

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Solution

The fourth proportional to 706.63, 975.26 and 556.91 is: 768.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.63 : 975.26 = 556.91 : x
  2. Step 2: Convert to fraction form
    706.63/975.26 = 556.91/x
  3. Step 3: Cross multiply
    706.63x = 975.26 × 556.91
  4. Step 4: Simplify right side
    706.63x = 543,129.26
  5. Step 5: Solve for x
    x = 543,129.26/706.63
  6. Step 6: Final answer
    x = 768.62

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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.