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Finding the Fourth Proportional to 488.68, 736.32 and 436.28

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Solution

The fourth proportional to 488.68, 736.32 and 436.28 is: 657.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.68 : 736.32 = 436.28 : x
  2. Step 2: Convert to fraction form
    488.68/736.32 = 436.28/x
  3. Step 3: Cross multiply
    488.68x = 736.32 × 436.28
  4. Step 4: Simplify right side
    488.68x = 321,241.69
  5. Step 5: Solve for x
    x = 321,241.69/488.68
  6. Step 6: Final answer
    x = 657.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.