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Finding the Fourth Proportional to 1,853.69, 2,781.07 and 555.14

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Solution

The fourth proportional to 1,853.69, 2,781.07 and 555.14 is: 832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.69 : 2,781.07 = 555.14 : x
  2. Step 2: Convert to fraction form
    1,853.69/2,781.07 = 555.14/x
  3. Step 3: Cross multiply
    1,853.69x = 2,781.07 × 555.14
  4. Step 4: Simplify right side
    1,853.69x = 1,543,888.76
  5. Step 5: Solve for x
    x = 1,543,888.76/1,853.69
  6. Step 6: Final answer
    x = 832.88

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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.