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Finding the Fourth Proportional to 479.02, 661.02 and 282.52

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Solution

The fourth proportional to 479.02, 661.02 and 282.52 is: 389.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.02 : 661.02 = 282.52 : x
  2. Step 2: Convert to fraction form
    479.02/661.02 = 282.52/x
  3. Step 3: Cross multiply
    479.02x = 661.02 × 282.52
  4. Step 4: Simplify right side
    479.02x = 186,751.37
  5. Step 5: Solve for x
    x = 186,751.37/479.02
  6. Step 6: Final answer
    x = 389.86

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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.