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Finding the Fourth Proportional to 1,174.41, 1,620.71 and 650.45

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Solution

The fourth proportional to 1,174.41, 1,620.71 and 650.45 is: 897.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.41 : 1,620.71 = 650.45 : x
  2. Step 2: Convert to fraction form
    1,174.41/1,620.71 = 650.45/x
  3. Step 3: Cross multiply
    1,174.41x = 1,620.71 × 650.45
  4. Step 4: Simplify right side
    1,174.41x = 1,054,179.46
  5. Step 5: Solve for x
    x = 1,054,179.46/1,174.41
  6. Step 6: Final answer
    x = 897.62

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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.