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Finding the Fourth Proportional to 557.64, 836.52 and 172.86

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Solution

The fourth proportional to 557.64, 836.52 and 172.86 is: 259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.64 : 836.52 = 172.86 : x
  2. Step 2: Convert to fraction form
    557.64/836.52 = 172.86/x
  3. Step 3: Cross multiply
    557.64x = 836.52 × 172.86
  4. Step 4: Simplify right side
    557.64x = 144,600.85
  5. Step 5: Solve for x
    x = 144,600.85/557.64
  6. Step 6: Final answer
    x = 259.31

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