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Finding the Fourth Proportional to 355.28, 530.62 and 301.28

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Solution

The fourth proportional to 355.28, 530.62 and 301.28 is: 449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.28 : 530.62 = 301.28 : x
  2. Step 2: Convert to fraction form
    355.28/530.62 = 301.28/x
  3. Step 3: Cross multiply
    355.28x = 530.62 × 301.28
  4. Step 4: Simplify right side
    355.28x = 159,865.19
  5. Step 5: Solve for x
    x = 159,865.19/355.28
  6. Step 6: Final answer
    x = 449.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.