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Finding the Fourth Proportional to 1,084.93, 1,497.70 and 692.49

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Solution

The fourth proportional to 1,084.93, 1,497.70 and 692.49 is: 955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.93 : 1,497.70 = 692.49 : x
  2. Step 2: Convert to fraction form
    1,084.93/1,497.70 = 692.49/x
  3. Step 3: Cross multiply
    1,084.93x = 1,497.70 × 692.49
  4. Step 4: Simplify right side
    1,084.93x = 1,037,142.27
  5. Step 5: Solve for x
    x = 1,037,142.27/1,084.93
  6. Step 6: Final answer
    x = 955.95

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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.