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Finding the Fourth Proportional to 1,427.99, 2,143.19 and 562.91

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Solution

The fourth proportional to 1,427.99, 2,143.19 and 562.91 is: 844.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.99 : 2,143.19 = 562.91 : x
  2. Step 2: Convert to fraction form
    1,427.99/2,143.19 = 562.91/x
  3. Step 3: Cross multiply
    1,427.99x = 2,143.19 × 562.91
  4. Step 4: Simplify right side
    1,427.99x = 1,206,413.77
  5. Step 5: Solve for x
    x = 1,206,413.77/1,427.99
  6. Step 6: Final answer
    x = 844.84

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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.