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Finding the Fourth Proportional to 460.79, 636.00 and 295.40

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Solution

The fourth proportional to 460.79, 636.00 and 295.40 is: 407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.79 : 636.00 = 295.40 : x
  2. Step 2: Convert to fraction form
    460.79/636.00 = 295.40/x
  3. Step 3: Cross multiply
    460.79x = 636.00 × 295.40
  4. Step 4: Simplify right side
    460.79x = 187,872.97
  5. Step 5: Solve for x
    x = 187,872.97/460.79
  6. Step 6: Final answer
    x = 407.72

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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.