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Finding the Fourth Proportional to 404.56, 555.59 and 376.01

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Solution

The fourth proportional to 404.56, 555.59 and 376.01 is: 516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.56 : 555.59 = 376.01 : x
  2. Step 2: Convert to fraction form
    404.56/555.59 = 376.01/x
  3. Step 3: Cross multiply
    404.56x = 555.59 × 376.01
  4. Step 4: Simplify right side
    404.56x = 208,907.64
  5. Step 5: Solve for x
    x = 208,907.64/404.56
  6. Step 6: Final answer
    x = 516.38

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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.