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Finding the Fourth Proportional to 1,182.27, 1,630.96 and 918.48

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Solution

The fourth proportional to 1,182.27, 1,630.96 and 918.48 is: 1,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.27 : 1,630.96 = 918.48 : x
  2. Step 2: Convert to fraction form
    1,182.27/1,630.96 = 918.48/x
  3. Step 3: Cross multiply
    1,182.27x = 1,630.96 × 918.48
  4. Step 4: Simplify right side
    1,182.27x = 1,498,004.14
  5. Step 5: Solve for x
    x = 1,498,004.14/1,182.27
  6. Step 6: Final answer
    x = 1,267.06

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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.