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Finding the Fourth Proportional to 445.88, 618.44 and 429.48

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Solution

The fourth proportional to 445.88, 618.44 and 429.48 is: 595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.88 : 618.44 = 429.48 : x
  2. Step 2: Convert to fraction form
    445.88/618.44 = 429.48/x
  3. Step 3: Cross multiply
    445.88x = 618.44 × 429.48
  4. Step 4: Simplify right side
    445.88x = 265,607.61
  5. Step 5: Solve for x
    x = 265,607.61/445.88
  6. Step 6: Final answer
    x = 595.69

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.