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Finding the Fourth Proportional to 1,435.98, 2,155.02 and 1,069.64

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Solution

The fourth proportional to 1,435.98, 2,155.02 and 1,069.64 is: 1,605.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.98 : 2,155.02 = 1,069.64 : x
  2. Step 2: Convert to fraction form
    1,435.98/2,155.02 = 1,069.64/x
  3. Step 3: Cross multiply
    1,435.98x = 2,155.02 × 1,069.64
  4. Step 4: Simplify right side
    1,435.98x = 2,305,095.59
  5. Step 5: Solve for x
    x = 2,305,095.59/1,435.98
  6. Step 6: Final answer
    x = 1,605.24

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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.