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Finding the Fourth Proportional to 460.34, 689.22 and 286.50

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Solution

The fourth proportional to 460.34, 689.22 and 286.50 is: 428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.34 : 689.22 = 286.50 : x
  2. Step 2: Convert to fraction form
    460.34/689.22 = 286.50/x
  3. Step 3: Cross multiply
    460.34x = 689.22 × 286.50
  4. Step 4: Simplify right side
    460.34x = 197,461.53
  5. Step 5: Solve for x
    x = 197,461.53/460.34
  6. Step 6: Final answer
    x = 428.95

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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.