Home / 1,645.04-2,270.21-899.05

Finding the Fourth Proportional to 1,645.04, 2,270.21 and 899.05

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Solution

The fourth proportional to 1,645.04, 2,270.21 and 899.05 is: 1,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.04 : 2,270.21 = 899.05 : x
  2. Step 2: Convert to fraction form
    1,645.04/2,270.21 = 899.05/x
  3. Step 3: Cross multiply
    1,645.04x = 2,270.21 × 899.05
  4. Step 4: Simplify right side
    1,645.04x = 2,041,031.44
  5. Step 5: Solve for x
    x = 2,041,031.44/1,645.04
  6. Step 6: Final answer
    x = 1,240.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.