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Finding the Fourth Proportional to 1,305.82, 1,800.69 and 907.94

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Solution

The fourth proportional to 1,305.82, 1,800.69 and 907.94 is: 1,252.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.82 : 1,800.69 = 907.94 : x
  2. Step 2: Convert to fraction form
    1,305.82/1,800.69 = 907.94/x
  3. Step 3: Cross multiply
    1,305.82x = 1,800.69 × 907.94
  4. Step 4: Simplify right side
    1,305.82x = 1,634,919.58
  5. Step 5: Solve for x
    x = 1,634,919.58/1,305.82
  6. Step 6: Final answer
    x = 1,252.02

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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.