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Finding the Fourth Proportional to 504.81, 696.99 and 308.58

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Solution

The fourth proportional to 504.81, 696.99 and 308.58 is: 426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.81 : 696.99 = 308.58 : x
  2. Step 2: Convert to fraction form
    504.81/696.99 = 308.58/x
  3. Step 3: Cross multiply
    504.81x = 696.99 × 308.58
  4. Step 4: Simplify right side
    504.81x = 215,077.17
  5. Step 5: Solve for x
    x = 215,077.17/504.81
  6. Step 6: Final answer
    x = 426.06

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