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Finding the Fourth Proportional to 294.64, 405.78 and 293.74

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Solution

The fourth proportional to 294.64, 405.78 and 293.74 is: 404.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.64 : 405.78 = 293.74 : x
  2. Step 2: Convert to fraction form
    294.64/405.78 = 293.74/x
  3. Step 3: Cross multiply
    294.64x = 405.78 × 293.74
  4. Step 4: Simplify right side
    294.64x = 119,193.82
  5. Step 5: Solve for x
    x = 119,193.82/294.64
  6. Step 6: Final answer
    x = 404.54

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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.