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Finding the Fourth Proportional to 1,086.30, 1,497.33 and 692.64

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Solution

The fourth proportional to 1,086.30, 1,497.33 and 692.64 is: 954.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.30 : 1,497.33 = 692.64 : x
  2. Step 2: Convert to fraction form
    1,086.30/1,497.33 = 692.64/x
  3. Step 3: Cross multiply
    1,086.30x = 1,497.33 × 692.64
  4. Step 4: Simplify right side
    1,086.30x = 1,037,110.65
  5. Step 5: Solve for x
    x = 1,037,110.65/1,086.30
  6. Step 6: Final answer
    x = 954.72

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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.