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Finding the Fourth Proportional to 1,405.71, 2,107.04 and 583.11

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Solution

The fourth proportional to 1,405.71, 2,107.04 and 583.11 is: 874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.71 : 2,107.04 = 583.11 : x
  2. Step 2: Convert to fraction form
    1,405.71/2,107.04 = 583.11/x
  3. Step 3: Cross multiply
    1,405.71x = 2,107.04 × 583.11
  4. Step 4: Simplify right side
    1,405.71x = 1,228,633.18
  5. Step 5: Solve for x
    x = 1,228,633.18/1,405.71
  6. Step 6: Final answer
    x = 874.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.