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Finding the Fourth Proportional to 647.84, 971.06 and 441.89

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Solution

The fourth proportional to 647.84, 971.06 and 441.89 is: 662.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.84 : 971.06 = 441.89 : x
  2. Step 2: Convert to fraction form
    647.84/971.06 = 441.89/x
  3. Step 3: Cross multiply
    647.84x = 971.06 × 441.89
  4. Step 4: Simplify right side
    647.84x = 429,105.24
  5. Step 5: Solve for x
    x = 429,105.24/647.84
  6. Step 6: Final answer
    x = 662.37

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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.