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Finding the Fourth Proportional to 552.21, 825.93 and 320.52

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Solution

The fourth proportional to 552.21, 825.93 and 320.52 is: 479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.21 : 825.93 = 320.52 : x
  2. Step 2: Convert to fraction form
    552.21/825.93 = 320.52/x
  3. Step 3: Cross multiply
    552.21x = 825.93 × 320.52
  4. Step 4: Simplify right side
    552.21x = 264,727.08
  5. Step 5: Solve for x
    x = 264,727.08/552.21
  6. Step 6: Final answer
    x = 479.40

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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.