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Finding the Fourth Proportional to 346.53, 519.80 and 285.53

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Solution

The fourth proportional to 346.53, 519.80 and 285.53 is: 428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.53 : 519.80 = 285.53 : x
  2. Step 2: Convert to fraction form
    346.53/519.80 = 285.53/x
  3. Step 3: Cross multiply
    346.53x = 519.80 × 285.53
  4. Step 4: Simplify right side
    346.53x = 148,418.49
  5. Step 5: Solve for x
    x = 148,418.49/346.53
  6. Step 6: Final answer
    x = 428.30

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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.