Home / 1,554.16-2,331.20-399.92

Finding the Fourth Proportional to 1,554.16, 2,331.20 and 399.92

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Solution

The fourth proportional to 1,554.16, 2,331.20 and 399.92 is: 599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.16 : 2,331.20 = 399.92 : x
  2. Step 2: Convert to fraction form
    1,554.16/2,331.20 = 399.92/x
  3. Step 3: Cross multiply
    1,554.16x = 2,331.20 × 399.92
  4. Step 4: Simplify right side
    1,554.16x = 932,293.50
  5. Step 5: Solve for x
    x = 932,293.50/1,554.16
  6. Step 6: Final answer
    x = 599.87

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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.