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Finding the Fourth Proportional to 373.61, 515.32 and 303.67

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Solution

The fourth proportional to 373.61, 515.32 and 303.67 is: 418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.61 : 515.32 = 303.67 : x
  2. Step 2: Convert to fraction form
    373.61/515.32 = 303.67/x
  3. Step 3: Cross multiply
    373.61x = 515.32 × 303.67
  4. Step 4: Simplify right side
    373.61x = 156,488.25
  5. Step 5: Solve for x
    x = 156,488.25/373.61
  6. Step 6: Final answer
    x = 418.85

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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.