Home / 1,265.18-1,897.77-399.70

Finding the Fourth Proportional to 1,265.18, 1,897.77 and 399.70

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Solution

The fourth proportional to 1,265.18, 1,897.77 and 399.70 is: 599.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.18 : 1,897.77 = 399.70 : x
  2. Step 2: Convert to fraction form
    1,265.18/1,897.77 = 399.70/x
  3. Step 3: Cross multiply
    1,265.18x = 1,897.77 × 399.70
  4. Step 4: Simplify right side
    1,265.18x = 758,529.18
  5. Step 5: Solve for x
    x = 758,529.18/1,265.18
  6. Step 6: Final answer
    x = 599.54

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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.