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Finding the Fourth Proportional to 499.86, 750.09 and 256.47

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Solution

The fourth proportional to 499.86, 750.09 and 256.47 is: 384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.86 : 750.09 = 256.47 : x
  2. Step 2: Convert to fraction form
    499.86/750.09 = 256.47/x
  3. Step 3: Cross multiply
    499.86x = 750.09 × 256.47
  4. Step 4: Simplify right side
    499.86x = 192,375.58
  5. Step 5: Solve for x
    x = 192,375.58/499.86
  6. Step 6: Final answer
    x = 384.86

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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.