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Finding the Fourth Proportional to 403.35, 603.77 and 376.71

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Solution

The fourth proportional to 403.35, 603.77 and 376.71 is: 563.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.35 : 603.77 = 376.71 : x
  2. Step 2: Convert to fraction form
    403.35/603.77 = 376.71/x
  3. Step 3: Cross multiply
    403.35x = 603.77 × 376.71
  4. Step 4: Simplify right side
    403.35x = 227,444.31
  5. Step 5: Solve for x
    x = 227,444.31/403.35
  6. Step 6: Final answer
    x = 563.89

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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.