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Finding the Fourth Proportional to 1,070.91, 1,603.94 and 583.29

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Solution

The fourth proportional to 1,070.91, 1,603.94 and 583.29 is: 873.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.91 : 1,603.94 = 583.29 : x
  2. Step 2: Convert to fraction form
    1,070.91/1,603.94 = 583.29/x
  3. Step 3: Cross multiply
    1,070.91x = 1,603.94 × 583.29
  4. Step 4: Simplify right side
    1,070.91x = 935,559.25
  5. Step 5: Solve for x
    x = 935,559.25/1,070.91
  6. Step 6: Final answer
    x = 873.61

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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.