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Finding the Fourth Proportional to 362.64, 499.96 and 288.20

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Solution

The fourth proportional to 362.64, 499.96 and 288.20 is: 397.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.64 : 499.96 = 288.20 : x
  2. Step 2: Convert to fraction form
    362.64/499.96 = 288.20/x
  3. Step 3: Cross multiply
    362.64x = 499.96 × 288.20
  4. Step 4: Simplify right side
    362.64x = 144,090.79
  5. Step 5: Solve for x
    x = 144,090.79/362.64
  6. Step 6: Final answer
    x = 397.33

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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.