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Finding the Fourth Proportional to 460.71, 691.06 and 379.38

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Solution

The fourth proportional to 460.71, 691.06 and 379.38 is: 569.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.71 : 691.06 = 379.38 : x
  2. Step 2: Convert to fraction form
    460.71/691.06 = 379.38/x
  3. Step 3: Cross multiply
    460.71x = 691.06 × 379.38
  4. Step 4: Simplify right side
    460.71x = 262,173.95
  5. Step 5: Solve for x
    x = 262,173.95/460.71
  6. Step 6: Final answer
    x = 569.07

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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.