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Finding the Fourth Proportional to 472.59, 709.19 and 256.32

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Solution

The fourth proportional to 472.59, 709.19 and 256.32 is: 384.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.59 : 709.19 = 256.32 : x
  2. Step 2: Convert to fraction form
    472.59/709.19 = 256.32/x
  3. Step 3: Cross multiply
    472.59x = 709.19 × 256.32
  4. Step 4: Simplify right side
    472.59x = 181,779.26
  5. Step 5: Solve for x
    x = 181,779.26/472.59
  6. Step 6: Final answer
    x = 384.64

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