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Finding the Fourth Proportional to 650.73, 970.06 and 640.74

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Solution

The fourth proportional to 650.73, 970.06 and 640.74 is: 955.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.73 : 970.06 = 640.74 : x
  2. Step 2: Convert to fraction form
    650.73/970.06 = 640.74/x
  3. Step 3: Cross multiply
    650.73x = 970.06 × 640.74
  4. Step 4: Simplify right side
    650.73x = 621,556.24
  5. Step 5: Solve for x
    x = 621,556.24/650.73
  6. Step 6: Final answer
    x = 955.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.