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Finding the Fourth Proportional to 460.47, 636.93 and 386.67

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Solution

The fourth proportional to 460.47, 636.93 and 386.67 is: 534.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.47 : 636.93 = 386.67 : x
  2. Step 2: Convert to fraction form
    460.47/636.93 = 386.67/x
  3. Step 3: Cross multiply
    460.47x = 636.93 × 386.67
  4. Step 4: Simplify right side
    460.47x = 246,281.72
  5. Step 5: Solve for x
    x = 246,281.72/460.47
  6. Step 6: Final answer
    x = 534.85

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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.