Home / 1,430.08-2,145.26-455.94

Finding the Fourth Proportional to 1,430.08, 2,145.26 and 455.94

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Solution

The fourth proportional to 1,430.08, 2,145.26 and 455.94 is: 683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.08 : 2,145.26 = 455.94 : x
  2. Step 2: Convert to fraction form
    1,430.08/2,145.26 = 455.94/x
  3. Step 3: Cross multiply
    1,430.08x = 2,145.26 × 455.94
  4. Step 4: Simplify right side
    1,430.08x = 978,109.84
  5. Step 5: Solve for x
    x = 978,109.84/1,430.08
  6. Step 6: Final answer
    x = 683.95

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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.