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Finding the Fourth Proportional to 499.06, 689.10 and 446.51

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Solution

The fourth proportional to 499.06, 689.10 and 446.51 is: 616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.06 : 689.10 = 446.51 : x
  2. Step 2: Convert to fraction form
    499.06/689.10 = 446.51/x
  3. Step 3: Cross multiply
    499.06x = 689.10 × 446.51
  4. Step 4: Simplify right side
    499.06x = 307,684.36
  5. Step 5: Solve for x
    x = 307,684.36/499.06
  6. Step 6: Final answer
    x = 616.53

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