Home / 1,474.21-2,211.38-434.22

Finding the Fourth Proportional to 1,474.21, 2,211.38 and 434.22

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Solution

The fourth proportional to 1,474.21, 2,211.38 and 434.22 is: 651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.21 : 2,211.38 = 434.22 : x
  2. Step 2: Convert to fraction form
    1,474.21/2,211.38 = 434.22/x
  3. Step 3: Cross multiply
    1,474.21x = 2,211.38 × 434.22
  4. Step 4: Simplify right side
    1,474.21x = 960,225.42
  5. Step 5: Solve for x
    x = 960,225.42/1,474.21
  6. Step 6: Final answer
    x = 651.35

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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.