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Finding the Fourth Proportional to 459.16, 690.23 and 368.85

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Solution

The fourth proportional to 459.16, 690.23 and 368.85 is: 554.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.16 : 690.23 = 368.85 : x
  2. Step 2: Convert to fraction form
    459.16/690.23 = 368.85/x
  3. Step 3: Cross multiply
    459.16x = 690.23 × 368.85
  4. Step 4: Simplify right side
    459.16x = 254,591.34
  5. Step 5: Solve for x
    x = 254,591.34/459.16
  6. Step 6: Final answer
    x = 554.47

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