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Finding the Fourth Proportional to 1,856.04, 2,784.05 and 557.54

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Solution

The fourth proportional to 1,856.04, 2,784.05 and 557.54 is: 836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.04 : 2,784.05 = 557.54 : x
  2. Step 2: Convert to fraction form
    1,856.04/2,784.05 = 557.54/x
  3. Step 3: Cross multiply
    1,856.04x = 2,784.05 × 557.54
  4. Step 4: Simplify right side
    1,856.04x = 1,552,219.24
  5. Step 5: Solve for x
    x = 1,552,219.24/1,856.04
  6. Step 6: Final answer
    x = 836.31

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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.