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Finding the Fourth Proportional to 374.11, 561.57 and 276.30

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Solution

The fourth proportional to 374.11, 561.57 and 276.30 is: 414.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.11 : 561.57 = 276.30 : x
  2. Step 2: Convert to fraction form
    374.11/561.57 = 276.30/x
  3. Step 3: Cross multiply
    374.11x = 561.57 × 276.30
  4. Step 4: Simplify right side
    374.11x = 155,160.41
  5. Step 5: Solve for x
    x = 155,160.41/374.11
  6. Step 6: Final answer
    x = 414.75

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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.