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Finding the Fourth Proportional to 315.76, 473.30 and 178.77

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Solution

The fourth proportional to 315.76, 473.30 and 178.77 is: 267.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.76 : 473.30 = 178.77 : x
  2. Step 2: Convert to fraction form
    315.76/473.30 = 178.77/x
  3. Step 3: Cross multiply
    315.76x = 473.30 × 178.77
  4. Step 4: Simplify right side
    315.76x = 84,610.95
  5. Step 5: Solve for x
    x = 84,610.95/315.76
  6. Step 6: Final answer
    x = 267.96

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