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Finding the Fourth Proportional to 294.09, 405.79 and 177.63

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Solution

The fourth proportional to 294.09, 405.79 and 177.63 is: 245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.09 : 405.79 = 177.63 : x
  2. Step 2: Convert to fraction form
    294.09/405.79 = 177.63/x
  3. Step 3: Cross multiply
    294.09x = 405.79 × 177.63
  4. Step 4: Simplify right side
    294.09x = 72,080.48
  5. Step 5: Solve for x
    x = 72,080.48/294.09
  6. Step 6: Final answer
    x = 245.10

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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.