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Finding the Fourth Proportional to 404.46, 554.52 and 397.17

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Solution

The fourth proportional to 404.46, 554.52 and 397.17 is: 544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.46 : 554.52 = 397.17 : x
  2. Step 2: Convert to fraction form
    404.46/554.52 = 397.17/x
  3. Step 3: Cross multiply
    404.46x = 554.52 × 397.17
  4. Step 4: Simplify right side
    404.46x = 220,238.71
  5. Step 5: Solve for x
    x = 220,238.71/404.46
  6. Step 6: Final answer
    x = 544.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.