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Finding the Fourth Proportional to 154.16, 231.19 and 56.64

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Solution

The fourth proportional to 154.16, 231.19 and 56.64 is: 84.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.16 : 231.19 = 56.64 : x
  2. Step 2: Convert to fraction form
    154.16/231.19 = 56.64/x
  3. Step 3: Cross multiply
    154.16x = 231.19 × 56.64
  4. Step 4: Simplify right side
    154.16x = 13,094.60
  5. Step 5: Solve for x
    x = 13,094.60/154.16
  6. Step 6: Final answer
    x = 84.94

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