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Finding the Fourth Proportional to 530.45, 796.13 and 299.57

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Solution

The fourth proportional to 530.45, 796.13 and 299.57 is: 449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.45 : 796.13 = 299.57 : x
  2. Step 2: Convert to fraction form
    530.45/796.13 = 299.57/x
  3. Step 3: Cross multiply
    530.45x = 796.13 × 299.57
  4. Step 4: Simplify right side
    530.45x = 238,492.31
  5. Step 5: Solve for x
    x = 238,492.31/530.45
  6. Step 6: Final answer
    x = 449.60

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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.