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Finding the Fourth Proportional to 695.37, 953.53 and 672.09

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Solution

The fourth proportional to 695.37, 953.53 and 672.09 is: 921.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.37 : 953.53 = 672.09 : x
  2. Step 2: Convert to fraction form
    695.37/953.53 = 672.09/x
  3. Step 3: Cross multiply
    695.37x = 953.53 × 672.09
  4. Step 4: Simplify right side
    695.37x = 640,857.98
  5. Step 5: Solve for x
    x = 640,857.98/695.37
  6. Step 6: Final answer
    x = 921.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.