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Finding the Fourth Proportional to 373.71, 515.45 and 303.77

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Solution

The fourth proportional to 373.71, 515.45 and 303.77 is: 418.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.71 : 515.45 = 303.77 : x
  2. Step 2: Convert to fraction form
    373.71/515.45 = 303.77/x
  3. Step 3: Cross multiply
    373.71x = 515.45 × 303.77
  4. Step 4: Simplify right side
    373.71x = 156,576.43
  5. Step 5: Solve for x
    x = 156,576.43/373.71
  6. Step 6: Final answer
    x = 418.98

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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.