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Finding the Fourth Proportional to 461.51, 692.30 and 136.88

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Solution

The fourth proportional to 461.51, 692.30 and 136.88 is: 205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.51 : 692.30 = 136.88 : x
  2. Step 2: Convert to fraction form
    461.51/692.30 = 136.88/x
  3. Step 3: Cross multiply
    461.51x = 692.30 × 136.88
  4. Step 4: Simplify right side
    461.51x = 94,758.65
  5. Step 5: Solve for x
    x = 94,758.65/461.51
  6. Step 6: Final answer
    x = 205.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.