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Finding the Fourth Proportional to 530.53, 793.96 and 447.91

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Solution

The fourth proportional to 530.53, 793.96 and 447.91 is: 670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.53 : 793.96 = 447.91 : x
  2. Step 2: Convert to fraction form
    530.53/793.96 = 447.91/x
  3. Step 3: Cross multiply
    530.53x = 793.96 × 447.91
  4. Step 4: Simplify right side
    530.53x = 355,622.62
  5. Step 5: Solve for x
    x = 355,622.62/530.53
  6. Step 6: Final answer
    x = 670.32

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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.