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Finding the Fourth Proportional to 499.24, 749.94 and 392.32

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Solution

The fourth proportional to 499.24, 749.94 and 392.32 is: 589.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.24 : 749.94 = 392.32 : x
  2. Step 2: Convert to fraction form
    499.24/749.94 = 392.32/x
  3. Step 3: Cross multiply
    499.24x = 749.94 × 392.32
  4. Step 4: Simplify right side
    499.24x = 294,216.46
  5. Step 5: Solve for x
    x = 294,216.46/499.24
  6. Step 6: Final answer
    x = 589.33

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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.