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Finding the Fourth Proportional to 443.02, 611.57 and 266.06

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Solution

The fourth proportional to 443.02, 611.57 and 266.06 is: 367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.02 : 611.57 = 266.06 : x
  2. Step 2: Convert to fraction form
    443.02/611.57 = 266.06/x
  3. Step 3: Cross multiply
    443.02x = 611.57 × 266.06
  4. Step 4: Simplify right side
    443.02x = 162,714.31
  5. Step 5: Solve for x
    x = 162,714.31/443.02
  6. Step 6: Final answer
    x = 367.28

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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.