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Finding the Fourth Proportional to 971.41, 1,456.35 and 662.49

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Solution

The fourth proportional to 971.41, 1,456.35 and 662.49 is: 993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.41 : 1,456.35 = 662.49 : x
  2. Step 2: Convert to fraction form
    971.41/1,456.35 = 662.49/x
  3. Step 3: Cross multiply
    971.41x = 1,456.35 × 662.49
  4. Step 4: Simplify right side
    971.41x = 964,814.00
  5. Step 5: Solve for x
    x = 964,814.00/971.41
  6. Step 6: Final answer
    x = 993.21

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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.