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Finding the Fourth Proportional to 508.06, 701.13 and 311.50

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Solution

The fourth proportional to 508.06, 701.13 and 311.50 is: 429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.06 : 701.13 = 311.50 : x
  2. Step 2: Convert to fraction form
    508.06/701.13 = 311.50/x
  3. Step 3: Cross multiply
    508.06x = 701.13 × 311.50
  4. Step 4: Simplify right side
    508.06x = 218,402.00
  5. Step 5: Solve for x
    x = 218,402.00/508.06
  6. Step 6: Final answer
    x = 429.87

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