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Finding the Fourth Proportional to 459.78, 634.53 and 263.25

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Solution

The fourth proportional to 459.78, 634.53 and 263.25 is: 363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.78 : 634.53 = 263.25 : x
  2. Step 2: Convert to fraction form
    459.78/634.53 = 263.25/x
  3. Step 3: Cross multiply
    459.78x = 634.53 × 263.25
  4. Step 4: Simplify right side
    459.78x = 167,041.01
  5. Step 5: Solve for x
    x = 167,041.01/459.78
  6. Step 6: Final answer
    x = 363.31

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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.