Home / 1,400.15-2,100.50-475.46

Finding the Fourth Proportional to 1,400.15, 2,100.50 and 475.46

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Solution

The fourth proportional to 1,400.15, 2,100.50 and 475.46 is: 713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.15 : 2,100.50 = 475.46 : x
  2. Step 2: Convert to fraction form
    1,400.15/2,100.50 = 475.46/x
  3. Step 3: Cross multiply
    1,400.15x = 2,100.50 × 475.46
  4. Step 4: Simplify right side
    1,400.15x = 998,701.35
  5. Step 5: Solve for x
    x = 998,701.35/1,400.15
  6. Step 6: Final answer
    x = 713.28

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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.