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Finding the Fourth Proportional to 469.48, 647.84 and 371.48

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Solution

The fourth proportional to 469.48, 647.84 and 371.48 is: 512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.48 : 647.84 = 371.48 : x
  2. Step 2: Convert to fraction form
    469.48/647.84 = 371.48/x
  3. Step 3: Cross multiply
    469.48x = 647.84 × 371.48
  4. Step 4: Simplify right side
    469.48x = 240,659.60
  5. Step 5: Solve for x
    x = 240,659.60/469.48
  6. Step 6: Final answer
    x = 512.61

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