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Finding the Fourth Proportional to 355.32, 530.07 and 301.56

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Solution

The fourth proportional to 355.32, 530.07 and 301.56 is: 449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.32 : 530.07 = 301.56 : x
  2. Step 2: Convert to fraction form
    355.32/530.07 = 301.56/x
  3. Step 3: Cross multiply
    355.32x = 530.07 × 301.56
  4. Step 4: Simplify right side
    355.32x = 159,847.91
  5. Step 5: Solve for x
    x = 159,847.91/355.32
  6. Step 6: Final answer
    x = 449.87

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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.