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Finding the Fourth Proportional to 1,664.52, 2,297.02 and 918.46

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Solution

The fourth proportional to 1,664.52, 2,297.02 and 918.46 is: 1,267.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.52 : 2,297.02 = 918.46 : x
  2. Step 2: Convert to fraction form
    1,664.52/2,297.02 = 918.46/x
  3. Step 3: Cross multiply
    1,664.52x = 2,297.02 × 918.46
  4. Step 4: Simplify right side
    1,664.52x = 2,109,732.12
  5. Step 5: Solve for x
    x = 2,109,732.12/1,664.52
  6. Step 6: Final answer
    x = 1,267.47

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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.