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Finding the Fourth Proportional to 1,252.14, 1,727.90 and 754.66

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Solution

The fourth proportional to 1,252.14, 1,727.90 and 754.66 is: 1,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.14 : 1,727.90 = 754.66 : x
  2. Step 2: Convert to fraction form
    1,252.14/1,727.90 = 754.66/x
  3. Step 3: Cross multiply
    1,252.14x = 1,727.90 × 754.66
  4. Step 4: Simplify right side
    1,252.14x = 1,303,977.01
  5. Step 5: Solve for x
    x = 1,303,977.01/1,252.14
  6. Step 6: Final answer
    x = 1,041.40

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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.