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Finding the Fourth Proportional to 445, 666.30 and 300.04

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Solution

The fourth proportional to 445, 666.30 and 300.04 is: 449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    445 : 666.30 = 300.04 : x
  2. Step 2: Convert to fraction form
    445/666.30 = 300.04/x
  3. Step 3: Cross multiply
    445x = 666.30 × 300.04
  4. Step 4: Simplify right side
    445x = 199,916.65
  5. Step 5: Solve for x
    x = 199,916.65/445
  6. Step 6: Final answer
    x = 449.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.