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Finding the Fourth Proportional to 1,424.94, 1,966.06 and 803.94

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Solution

The fourth proportional to 1,424.94, 1,966.06 and 803.94 is: 1,109.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.94 : 1,966.06 = 803.94 : x
  2. Step 2: Convert to fraction form
    1,424.94/1,966.06 = 803.94/x
  3. Step 3: Cross multiply
    1,424.94x = 1,966.06 × 803.94
  4. Step 4: Simplify right side
    1,424.94x = 1,580,594.28
  5. Step 5: Solve for x
    x = 1,580,594.28/1,424.94
  6. Step 6: Final answer
    x = 1,109.24

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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.