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Finding the Fourth Proportional to 340.78, 468.70 and 295.72

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Solution

The fourth proportional to 340.78, 468.70 and 295.72 is: 406.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.78 : 468.70 = 295.72 : x
  2. Step 2: Convert to fraction form
    340.78/468.70 = 295.72/x
  3. Step 3: Cross multiply
    340.78x = 468.70 × 295.72
  4. Step 4: Simplify right side
    340.78x = 138,603.96
  5. Step 5: Solve for x
    x = 138,603.96/340.78
  6. Step 6: Final answer
    x = 406.73

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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.