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Finding the Fourth Proportional to 460.33, 690.75 and 425.50

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Solution

The fourth proportional to 460.33, 690.75 and 425.50 is: 638.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.33 : 690.75 = 425.50 : x
  2. Step 2: Convert to fraction form
    460.33/690.75 = 425.50/x
  3. Step 3: Cross multiply
    460.33x = 690.75 × 425.50
  4. Step 4: Simplify right side
    460.33x = 293,914.13
  5. Step 5: Solve for x
    x = 293,914.13/460.33
  6. Step 6: Final answer
    x = 638.49

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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.