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Finding the Fourth Proportional to 370.17, 551.41 and 356.81

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Solution

The fourth proportional to 370.17, 551.41 and 356.81 is: 531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.17 : 551.41 = 356.81 : x
  2. Step 2: Convert to fraction form
    370.17/551.41 = 356.81/x
  3. Step 3: Cross multiply
    370.17x = 551.41 × 356.81
  4. Step 4: Simplify right side
    370.17x = 196,744.95
  5. Step 5: Solve for x
    x = 196,744.95/370.17
  6. Step 6: Final answer
    x = 531.50

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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.