Home / 1,449.09-2,174.18-669.47

Finding the Fourth Proportional to 1,449.09, 2,174.18 and 669.47

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Solution

The fourth proportional to 1,449.09, 2,174.18 and 669.47 is: 1,004.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.09 : 2,174.18 = 669.47 : x
  2. Step 2: Convert to fraction form
    1,449.09/2,174.18 = 669.47/x
  3. Step 3: Cross multiply
    1,449.09x = 2,174.18 × 669.47
  4. Step 4: Simplify right side
    1,449.09x = 1,455,534.07
  5. Step 5: Solve for x
    x = 1,455,534.07/1,449.09
  6. Step 6: Final answer
    x = 1,004.45

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1.5x scale

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.