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Finding the Fourth Proportional to 460.22, 689.09 and 286.47

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Solution

The fourth proportional to 460.22, 689.09 and 286.47 is: 428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.22 : 689.09 = 286.47 : x
  2. Step 2: Convert to fraction form
    460.22/689.09 = 286.47/x
  3. Step 3: Cross multiply
    460.22x = 689.09 × 286.47
  4. Step 4: Simplify right side
    460.22x = 197,402.18
  5. Step 5: Solve for x
    x = 197,402.18/460.22
  6. Step 6: Final answer
    x = 428.93

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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.