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Finding the Fourth Proportional to 443.73, 665.91 and 358.10

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Solution

The fourth proportional to 443.73, 665.91 and 358.10 is: 537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.73 : 665.91 = 358.10 : x
  2. Step 2: Convert to fraction form
    443.73/665.91 = 358.10/x
  3. Step 3: Cross multiply
    443.73x = 665.91 × 358.10
  4. Step 4: Simplify right side
    443.73x = 238,462.37
  5. Step 5: Solve for x
    x = 238,462.37/443.73
  6. Step 6: Final answer
    x = 537.40

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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.