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Finding the Fourth Proportional to 447.17, 670.55 and 203.58

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Solution

The fourth proportional to 447.17, 670.55 and 203.58 is: 305.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.17 : 670.55 = 203.58 : x
  2. Step 2: Convert to fraction form
    447.17/670.55 = 203.58/x
  3. Step 3: Cross multiply
    447.17x = 670.55 × 203.58
  4. Step 4: Simplify right side
    447.17x = 136,509.55
  5. Step 5: Solve for x
    x = 136,509.55/447.17
  6. Step 6: Final answer
    x = 305.28

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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.