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Finding the Fourth Proportional to 941.68, 1,299.90 and 692.92

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Solution

The fourth proportional to 941.68, 1,299.90 and 692.92 is: 956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.68 : 1,299.90 = 692.92 : x
  2. Step 2: Convert to fraction form
    941.68/1,299.90 = 692.92/x
  3. Step 3: Cross multiply
    941.68x = 1,299.90 × 692.92
  4. Step 4: Simplify right side
    941.68x = 900,726.71
  5. Step 5: Solve for x
    x = 900,726.71/941.68
  6. Step 6: Final answer
    x = 956.51

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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.