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Finding the Fourth Proportional to 440.17, 659.64 and 302.87

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Solution

The fourth proportional to 440.17, 659.64 and 302.87 is: 453.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.17 : 659.64 = 302.87 : x
  2. Step 2: Convert to fraction form
    440.17/659.64 = 302.87/x
  3. Step 3: Cross multiply
    440.17x = 659.64 × 302.87
  4. Step 4: Simplify right side
    440.17x = 199,785.17
  5. Step 5: Solve for x
    x = 199,785.17/440.17
  6. Step 6: Final answer
    x = 453.88

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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.