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Finding the Fourth Proportional to 1,259.98, 1,890.11 and 335.57

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Solution

The fourth proportional to 1,259.98, 1,890.11 and 335.57 is: 503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.98 : 1,890.11 = 335.57 : x
  2. Step 2: Convert to fraction form
    1,259.98/1,890.11 = 335.57/x
  3. Step 3: Cross multiply
    1,259.98x = 1,890.11 × 335.57
  4. Step 4: Simplify right side
    1,259.98x = 634,264.21
  5. Step 5: Solve for x
    x = 634,264.21/1,259.98
  6. Step 6: Final answer
    x = 503.39

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1.5x scale

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.