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Finding the Fourth Proportional to 467.04, 645.36 and 312

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Solution

The fourth proportional to 467.04, 645.36 and 312 is: 431.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.04 : 645.36 = 312 : x
  2. Step 2: Convert to fraction form
    467.04/645.36 = 312/x
  3. Step 3: Cross multiply
    467.04x = 645.36 × 312
  4. Step 4: Simplify right side
    467.04x = 201,352.32
  5. Step 5: Solve for x
    x = 201,352.32/467.04
  6. Step 6: Final answer
    x = 431.12

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