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Finding the Fourth Proportional to 648.05, 972.30 and 546.29

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Solution

The fourth proportional to 648.05, 972.30 and 546.29 is: 819.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.05 : 972.30 = 546.29 : x
  2. Step 2: Convert to fraction form
    648.05/972.30 = 546.29/x
  3. Step 3: Cross multiply
    648.05x = 972.30 × 546.29
  4. Step 4: Simplify right side
    648.05x = 531,164.07
  5. Step 5: Solve for x
    x = 531,164.07/648.05
  6. Step 6: Final answer
    x = 819.63

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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.