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Finding the Fourth Proportional to 464.45, 696.69 and 156.31

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Solution

The fourth proportional to 464.45, 696.69 and 156.31 is: 234.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.45 : 696.69 = 156.31 : x
  2. Step 2: Convert to fraction form
    464.45/696.69 = 156.31/x
  3. Step 3: Cross multiply
    464.45x = 696.69 × 156.31
  4. Step 4: Simplify right side
    464.45x = 108,897.29
  5. Step 5: Solve for x
    x = 108,897.29/464.45
  6. Step 6: Final answer
    x = 234.47

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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.