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Finding the Fourth Proportional to 370.62, 553.79 and 283.47

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Solution

The fourth proportional to 370.62, 553.79 and 283.47 is: 423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.62 : 553.79 = 283.47 : x
  2. Step 2: Convert to fraction form
    370.62/553.79 = 283.47/x
  3. Step 3: Cross multiply
    370.62x = 553.79 × 283.47
  4. Step 4: Simplify right side
    370.62x = 156,981.43
  5. Step 5: Solve for x
    x = 156,981.43/370.62
  6. Step 6: Final answer
    x = 423.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.