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Finding the Fourth Proportional to 1,853.49, 2,780.69 and 554.96

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Solution

The fourth proportional to 1,853.49, 2,780.69 and 554.96 is: 832.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.49 : 2,780.69 = 554.96 : x
  2. Step 2: Convert to fraction form
    1,853.49/2,780.69 = 554.96/x
  3. Step 3: Cross multiply
    1,853.49x = 2,780.69 × 554.96
  4. Step 4: Simplify right side
    1,853.49x = 1,543,155.04
  5. Step 5: Solve for x
    x = 1,543,155.04/1,853.49
  6. Step 6: Final answer
    x = 832.57

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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.