Home / 1,449.19-2,172.21-474.58

Finding the Fourth Proportional to 1,449.19, 2,172.21 and 474.58

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Solution

The fourth proportional to 1,449.19, 2,172.21 and 474.58 is: 711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.19 : 2,172.21 = 474.58 : x
  2. Step 2: Convert to fraction form
    1,449.19/2,172.21 = 474.58/x
  3. Step 3: Cross multiply
    1,449.19x = 2,172.21 × 474.58
  4. Step 4: Simplify right side
    1,449.19x = 1,030,887.42
  5. Step 5: Solve for x
    x = 1,030,887.42/1,449.19
  6. Step 6: Final answer
    x = 711.35

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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.