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Finding the Fourth Proportional to 1,485.58, 2,228.93 and 561.37

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Solution

The fourth proportional to 1,485.58, 2,228.93 and 561.37 is: 842.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.58 : 2,228.93 = 561.37 : x
  2. Step 2: Convert to fraction form
    1,485.58/2,228.93 = 561.37/x
  3. Step 3: Cross multiply
    1,485.58x = 2,228.93 × 561.37
  4. Step 4: Simplify right side
    1,485.58x = 1,251,254.43
  5. Step 5: Solve for x
    x = 1,251,254.43/1,485.58
  6. Step 6: Final answer
    x = 842.27

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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.