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Finding the Fourth Proportional to 344.55, 474.57 and 342.73

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Solution

The fourth proportional to 344.55, 474.57 and 342.73 is: 472.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.55 : 474.57 = 342.73 : x
  2. Step 2: Convert to fraction form
    344.55/474.57 = 342.73/x
  3. Step 3: Cross multiply
    344.55x = 474.57 × 342.73
  4. Step 4: Simplify right side
    344.55x = 162,647.00
  5. Step 5: Solve for x
    x = 162,647.00/344.55
  6. Step 6: Final answer
    x = 472.06

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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.