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Finding the Fourth Proportional to 1,855.54, 2,783.46 and 557.01

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Solution

The fourth proportional to 1,855.54, 2,783.46 and 557.01 is: 835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.54 : 2,783.46 = 557.01 : x
  2. Step 2: Convert to fraction form
    1,855.54/2,783.46 = 557.01/x
  3. Step 3: Cross multiply
    1,855.54x = 2,783.46 × 557.01
  4. Step 4: Simplify right side
    1,855.54x = 1,550,417.14
  5. Step 5: Solve for x
    x = 1,550,417.14/1,855.54
  6. Step 6: Final answer
    x = 835.56

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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.