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Finding the Fourth Proportional to 295.12, 406.65 and 284.32

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Solution

The fourth proportional to 295.12, 406.65 and 284.32 is: 391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    295.12 : 406.65 = 284.32 : x
  2. Step 2: Convert to fraction form
    295.12/406.65 = 284.32/x
  3. Step 3: Cross multiply
    295.12x = 406.65 × 284.32
  4. Step 4: Simplify right side
    295.12x = 115,618.73
  5. Step 5: Solve for x
    x = 115,618.73/295.12
  6. Step 6: Final answer
    x = 391.77

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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.