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Finding the Fourth Proportional to 407.16, 611.14 and 298.64

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Solution

The fourth proportional to 407.16, 611.14 and 298.64 is: 448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.16 : 611.14 = 298.64 : x
  2. Step 2: Convert to fraction form
    407.16/611.14 = 298.64/x
  3. Step 3: Cross multiply
    407.16x = 611.14 × 298.64
  4. Step 4: Simplify right side
    407.16x = 182,510.85
  5. Step 5: Solve for x
    x = 182,510.85/407.16
  6. Step 6: Final answer
    x = 448.25

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