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Finding the Fourth Proportional to 400.74, 551.49 and 370.98

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Solution

The fourth proportional to 400.74, 551.49 and 370.98 is: 510.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.74 : 551.49 = 370.98 : x
  2. Step 2: Convert to fraction form
    400.74/551.49 = 370.98/x
  3. Step 3: Cross multiply
    400.74x = 551.49 × 370.98
  4. Step 4: Simplify right side
    400.74x = 204,591.76
  5. Step 5: Solve for x
    x = 204,591.76/400.74
  6. Step 6: Final answer
    x = 510.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.