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Finding the Fourth Proportional to 376.50, 561.25 and 355.98

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Solution

The fourth proportional to 376.50, 561.25 and 355.98 is: 530.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.50 : 561.25 = 355.98 : x
  2. Step 2: Convert to fraction form
    376.50/561.25 = 355.98/x
  3. Step 3: Cross multiply
    376.50x = 561.25 × 355.98
  4. Step 4: Simplify right side
    376.50x = 199,793.78
  5. Step 5: Solve for x
    x = 199,793.78/376.50
  6. Step 6: Final answer
    x = 530.66

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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.