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Finding the Fourth Proportional to 294.39, 406.28 and 177.99

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Solution

The fourth proportional to 294.39, 406.28 and 177.99 is: 245.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.39 : 406.28 = 177.99 : x
  2. Step 2: Convert to fraction form
    294.39/406.28 = 177.99/x
  3. Step 3: Cross multiply
    294.39x = 406.28 × 177.99
  4. Step 4: Simplify right side
    294.39x = 72,312.89
  5. Step 5: Solve for x
    x = 72,312.89/294.39
  6. Step 6: Final answer
    x = 245.64

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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.