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Finding the Fourth Proportional to 1,664.96, 2,297.59 and 918.92

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Solution

The fourth proportional to 1,664.96, 2,297.59 and 918.92 is: 1,268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.96 : 2,297.59 = 918.92 : x
  2. Step 2: Convert to fraction form
    1,664.96/2,297.59 = 918.92/x
  3. Step 3: Cross multiply
    1,664.96x = 2,297.59 × 918.92
  4. Step 4: Simplify right side
    1,664.96x = 2,111,304.85
  5. Step 5: Solve for x
    x = 2,111,304.85/1,664.96
  6. Step 6: Final answer
    x = 1,268.08

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1.5x scale

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.