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Finding the Fourth Proportional to 250.65, 345.72 and 188.49

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Solution

The fourth proportional to 250.65, 345.72 and 188.49 is: 259.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.65 : 345.72 = 188.49 : x
  2. Step 2: Convert to fraction form
    250.65/345.72 = 188.49/x
  3. Step 3: Cross multiply
    250.65x = 345.72 × 188.49
  4. Step 4: Simplify right side
    250.65x = 65,164.76
  5. Step 5: Solve for x
    x = 65,164.76/250.65
  6. Step 6: Final answer
    x = 259.98

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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.