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Finding the Fourth Proportional to 1,232.15, 1,700.36 and 672.62

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Solution

The fourth proportional to 1,232.15, 1,700.36 and 672.62 is: 928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.15 : 1,700.36 = 672.62 : x
  2. Step 2: Convert to fraction form
    1,232.15/1,700.36 = 672.62/x
  3. Step 3: Cross multiply
    1,232.15x = 1,700.36 × 672.62
  4. Step 4: Simplify right side
    1,232.15x = 1,143,686.80
  5. Step 5: Solve for x
    x = 1,143,686.80/1,232.15
  6. Step 6: Final answer
    x = 928.21

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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.