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Finding the Fourth Proportional to 1,147.66, 1,583.69 and 650.36

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Solution

The fourth proportional to 1,147.66, 1,583.69 and 650.36 is: 897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.66 : 1,583.69 = 650.36 : x
  2. Step 2: Convert to fraction form
    1,147.66/1,583.69 = 650.36/x
  3. Step 3: Cross multiply
    1,147.66x = 1,583.69 × 650.36
  4. Step 4: Simplify right side
    1,147.66x = 1,029,969.34
  5. Step 5: Solve for x
    x = 1,029,969.34/1,147.66
  6. Step 6: Final answer
    x = 897.45

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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.