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Finding the Fourth Proportional to 499.32, 745.54 and 436.43

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Solution

The fourth proportional to 499.32, 745.54 and 436.43 is: 651.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.32 : 745.54 = 436.43 : x
  2. Step 2: Convert to fraction form
    499.32/745.54 = 436.43/x
  3. Step 3: Cross multiply
    499.32x = 745.54 × 436.43
  4. Step 4: Simplify right side
    499.32x = 325,376.79
  5. Step 5: Solve for x
    x = 325,376.79/499.32
  6. Step 6: Final answer
    x = 651.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.