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Finding the Fourth Proportional to 837.48, 1,261.05 and 692.62

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Solution

The fourth proportional to 837.48, 1,261.05 and 692.62 is: 1,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.48 : 1,261.05 = 692.62 : x
  2. Step 2: Convert to fraction form
    837.48/1,261.05 = 692.62/x
  3. Step 3: Cross multiply
    837.48x = 1,261.05 × 692.62
  4. Step 4: Simplify right side
    837.48x = 873,428.45
  5. Step 5: Solve for x
    x = 873,428.45/837.48
  6. Step 6: Final answer
    x = 1,042.92

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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.