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Finding the Fourth Proportional to 835.57, 1,258.99 and 692.50

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Solution

The fourth proportional to 835.57, 1,258.99 and 692.50 is: 1,043.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.57 : 1,258.99 = 692.50 : x
  2. Step 2: Convert to fraction form
    835.57/1,258.99 = 692.50/x
  3. Step 3: Cross multiply
    835.57x = 1,258.99 × 692.50
  4. Step 4: Simplify right side
    835.57x = 871,850.58
  5. Step 5: Solve for x
    x = 871,850.58/835.57
  6. Step 6: Final answer
    x = 1,043.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.