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Finding the Fourth Proportional to 344.52, 474.12 and 289.98

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Solution

The fourth proportional to 344.52, 474.12 and 289.98 is: 399.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.52 : 474.12 = 289.98 : x
  2. Step 2: Convert to fraction form
    344.52/474.12 = 289.98/x
  3. Step 3: Cross multiply
    344.52x = 474.12 × 289.98
  4. Step 4: Simplify right side
    344.52x = 137,485.32
  5. Step 5: Solve for x
    x = 137,485.32/344.52
  6. Step 6: Final answer
    x = 399.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.