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Finding the Fourth Proportional to 399.77, 598.65 and 253.08

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Solution

The fourth proportional to 399.77, 598.65 and 253.08 is: 378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.77 : 598.65 = 253.08 : x
  2. Step 2: Convert to fraction form
    399.77/598.65 = 253.08/x
  3. Step 3: Cross multiply
    399.77x = 598.65 × 253.08
  4. Step 4: Simplify right side
    399.77x = 151,502.08
  5. Step 5: Solve for x
    x = 151,502.08/399.77
  6. Step 6: Final answer
    x = 378.97

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