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Finding the Fourth Proportional to 703.17, 970.38 and 556.83

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Solution

The fourth proportional to 703.17, 970.38 and 556.83 is: 768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.17 : 970.38 = 556.83 : x
  2. Step 2: Convert to fraction form
    703.17/970.38 = 556.83/x
  3. Step 3: Cross multiply
    703.17x = 970.38 × 556.83
  4. Step 4: Simplify right side
    703.17x = 540,336.70
  5. Step 5: Solve for x
    x = 540,336.70/703.17
  6. Step 6: Final answer
    x = 768.43

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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.