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Finding the Fourth Proportional to 362.54, 499.77 and 257.28

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Solution

The fourth proportional to 362.54, 499.77 and 257.28 is: 354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.54 : 499.77 = 257.28 : x
  2. Step 2: Convert to fraction form
    362.54/499.77 = 257.28/x
  3. Step 3: Cross multiply
    362.54x = 499.77 × 257.28
  4. Step 4: Simplify right side
    362.54x = 128,580.83
  5. Step 5: Solve for x
    x = 128,580.83/362.54
  6. Step 6: Final answer
    x = 354.67

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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.