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Finding the Fourth Proportional to 1,485.87, 2,050.50 and 822.77

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Solution

The fourth proportional to 1,485.87, 2,050.50 and 822.77 is: 1,135.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.87 : 2,050.50 = 822.77 : x
  2. Step 2: Convert to fraction form
    1,485.87/2,050.50 = 822.77/x
  3. Step 3: Cross multiply
    1,485.87x = 2,050.50 × 822.77
  4. Step 4: Simplify right side
    1,485.87x = 1,687,075.52
  5. Step 5: Solve for x
    x = 1,687,075.52/1,485.87
  6. Step 6: Final answer
    x = 1,135.41

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.