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Finding the Fourth Proportional to 460.14, 692.93 and 387.65

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Solution

The fourth proportional to 460.14, 692.93 and 387.65 is: 583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.14 : 692.93 = 387.65 : x
  2. Step 2: Convert to fraction form
    460.14/692.93 = 387.65/x
  3. Step 3: Cross multiply
    460.14x = 692.93 × 387.65
  4. Step 4: Simplify right side
    460.14x = 268,608.91
  5. Step 5: Solve for x
    x = 268,608.91/460.14
  6. Step 6: Final answer
    x = 583.75

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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.