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Finding the Fourth Proportional to 264.32, 395.44 and 228.64

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Solution

The fourth proportional to 264.32, 395.44 and 228.64 is: 342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.32 : 395.44 = 228.64 : x
  2. Step 2: Convert to fraction form
    264.32/395.44 = 228.64/x
  3. Step 3: Cross multiply
    264.32x = 395.44 × 228.64
  4. Step 4: Simplify right side
    264.32x = 90,413.40
  5. Step 5: Solve for x
    x = 90,413.40/264.32
  6. Step 6: Final answer
    x = 342.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.