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Finding the Fourth Proportional to 460.54, 635.49 and 386.74

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Solution

The fourth proportional to 460.54, 635.49 and 386.74 is: 533.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.54 : 635.49 = 386.74 : x
  2. Step 2: Convert to fraction form
    460.54/635.49 = 386.74/x
  3. Step 3: Cross multiply
    460.54x = 635.49 × 386.74
  4. Step 4: Simplify right side
    460.54x = 245,769.40
  5. Step 5: Solve for x
    x = 245,769.40/460.54
  6. Step 6: Final answer
    x = 533.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.