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Finding the Fourth Proportional to 460.92, 635.58 and 305.40

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Solution

The fourth proportional to 460.92, 635.58 and 305.40 is: 421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.92 : 635.58 = 305.40 : x
  2. Step 2: Convert to fraction form
    460.92/635.58 = 305.40/x
  3. Step 3: Cross multiply
    460.92x = 635.58 × 305.40
  4. Step 4: Simplify right side
    460.92x = 194,106.13
  5. Step 5: Solve for x
    x = 194,106.13/460.92
  6. Step 6: Final answer
    x = 421.13

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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.