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Finding the Fourth Proportional to 1,147.27, 1,583.16 and 649.93

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Solution

The fourth proportional to 1,147.27, 1,583.16 and 649.93 is: 896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.27 : 1,583.16 = 649.93 : x
  2. Step 2: Convert to fraction form
    1,147.27/1,583.16 = 649.93/x
  3. Step 3: Cross multiply
    1,147.27x = 1,583.16 × 649.93
  4. Step 4: Simplify right side
    1,147.27x = 1,028,943.18
  5. Step 5: Solve for x
    x = 1,028,943.18/1,147.27
  6. Step 6: Final answer
    x = 896.86

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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.