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Finding the Fourth Proportional to 612.21, 843.96 and 437.25

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Solution

The fourth proportional to 612.21, 843.96 and 437.25 is: 602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.21 : 843.96 = 437.25 : x
  2. Step 2: Convert to fraction form
    612.21/843.96 = 437.25/x
  3. Step 3: Cross multiply
    612.21x = 843.96 × 437.25
  4. Step 4: Simplify right side
    612.21x = 369,021.51
  5. Step 5: Solve for x
    x = 369,021.51/612.21
  6. Step 6: Final answer
    x = 602.77

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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.