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Finding the Fourth Proportional to 395.52, 544 and 348.16

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Solution

The fourth proportional to 395.52, 544 and 348.16 is: 478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.52 : 544 = 348.16 : x
  2. Step 2: Convert to fraction form
    395.52/544 = 348.16/x
  3. Step 3: Cross multiply
    395.52x = 544 × 348.16
  4. Step 4: Simplify right side
    395.52x = 189,399.04
  5. Step 5: Solve for x
    x = 189,399.04/395.52
  6. Step 6: Final answer
    x = 478.86

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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.