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Finding the Fourth Proportional to 464.28, 695.66 and 326.66

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Solution

The fourth proportional to 464.28, 695.66 and 326.66 is: 489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.28 : 695.66 = 326.66 : x
  2. Step 2: Convert to fraction form
    464.28/695.66 = 326.66/x
  3. Step 3: Cross multiply
    464.28x = 695.66 × 326.66
  4. Step 4: Simplify right side
    464.28x = 227,243.02
  5. Step 5: Solve for x
    x = 227,243.02/464.28
  6. Step 6: Final answer
    x = 489.45

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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.