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Finding the Fourth Proportional to 648.33, 971.61 and 296.67

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Solution

The fourth proportional to 648.33, 971.61 and 296.67 is: 444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.33 : 971.61 = 296.67 : x
  2. Step 2: Convert to fraction form
    648.33/971.61 = 296.67/x
  3. Step 3: Cross multiply
    648.33x = 971.61 × 296.67
  4. Step 4: Simplify right side
    648.33x = 288,247.54
  5. Step 5: Solve for x
    x = 288,247.54/648.33
  6. Step 6: Final answer
    x = 444.60

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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.