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Finding the Fourth Proportional to 432.07, 647.33 and 236.86

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Solution

The fourth proportional to 432.07, 647.33 and 236.86 is: 354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.07 : 647.33 = 236.86 : x
  2. Step 2: Convert to fraction form
    432.07/647.33 = 236.86/x
  3. Step 3: Cross multiply
    432.07x = 647.33 × 236.86
  4. Step 4: Simplify right side
    432.07x = 153,323.78
  5. Step 5: Solve for x
    x = 153,323.78/432.07
  6. Step 6: Final answer
    x = 354.86

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