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Finding the Fourth Proportional to 1,023.10, 1,413.16 and 890.06

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Solution

The fourth proportional to 1,023.10, 1,413.16 and 890.06 is: 1,229.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.10 : 1,413.16 = 890.06 : x
  2. Step 2: Convert to fraction form
    1,023.10/1,413.16 = 890.06/x
  3. Step 3: Cross multiply
    1,023.10x = 1,413.16 × 890.06
  4. Step 4: Simplify right side
    1,023.10x = 1,257,787.90
  5. Step 5: Solve for x
    x = 1,257,787.90/1,023.10
  6. Step 6: Final answer
    x = 1,229.39

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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.