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Finding the Fourth Proportional to 263.65, 395.60 and 109.53

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Solution

The fourth proportional to 263.65, 395.60 and 109.53 is: 164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.65 : 395.60 = 109.53 : x
  2. Step 2: Convert to fraction form
    263.65/395.60 = 109.53/x
  3. Step 3: Cross multiply
    263.65x = 395.60 × 109.53
  4. Step 4: Simplify right side
    263.65x = 43,330.07
  5. Step 5: Solve for x
    x = 43,330.07/263.65
  6. Step 6: Final answer
    x = 164.35

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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.