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Finding the Fourth Proportional to 469.82, 648.06 and 371.54

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Solution

The fourth proportional to 469.82, 648.06 and 371.54 is: 512.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.82 : 648.06 = 371.54 : x
  2. Step 2: Convert to fraction form
    469.82/648.06 = 371.54/x
  3. Step 3: Cross multiply
    469.82x = 648.06 × 371.54
  4. Step 4: Simplify right side
    469.82x = 240,780.21
  5. Step 5: Solve for x
    x = 240,780.21/469.82
  6. Step 6: Final answer
    x = 512.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.