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Finding the Fourth Proportional to 346.08, 520.25 and 320.71

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Solution

The fourth proportional to 346.08, 520.25 and 320.71 is: 482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.08 : 520.25 = 320.71 : x
  2. Step 2: Convert to fraction form
    346.08/520.25 = 320.71/x
  3. Step 3: Cross multiply
    346.08x = 520.25 × 320.71
  4. Step 4: Simplify right side
    346.08x = 166,849.38
  5. Step 5: Solve for x
    x = 166,849.38/346.08
  6. Step 6: Final answer
    x = 482.11

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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.