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Finding the Fourth Proportional to 346.56, 519.50 and 285.05

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Solution

The fourth proportional to 346.56, 519.50 and 285.05 is: 427.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.56 : 519.50 = 285.05 : x
  2. Step 2: Convert to fraction form
    346.56/519.50 = 285.05/x
  3. Step 3: Cross multiply
    346.56x = 519.50 × 285.05
  4. Step 4: Simplify right side
    346.56x = 148,082.05
  5. Step 5: Solve for x
    x = 148,082.05/346.56
  6. Step 6: Final answer
    x = 427.29

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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.