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Finding the Fourth Proportional to 445.58, 614.55 and 279.62

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Solution

The fourth proportional to 445.58, 614.55 and 279.62 is: 385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.58 : 614.55 = 279.62 : x
  2. Step 2: Convert to fraction form
    445.58/614.55 = 279.62/x
  3. Step 3: Cross multiply
    445.58x = 614.55 × 279.62
  4. Step 4: Simplify right side
    445.58x = 171,840.47
  5. Step 5: Solve for x
    x = 171,840.47/445.58
  6. Step 6: Final answer
    x = 385.66

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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.