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Finding the Fourth Proportional to 372.84, 514.53 and 225.45

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Solution

The fourth proportional to 372.84, 514.53 and 225.45 is: 311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.84 : 514.53 = 225.45 : x
  2. Step 2: Convert to fraction form
    372.84/514.53 = 225.45/x
  3. Step 3: Cross multiply
    372.84x = 514.53 × 225.45
  4. Step 4: Simplify right side
    372.84x = 116,000.79
  5. Step 5: Solve for x
    x = 116,000.79/372.84
  6. Step 6: Final answer
    x = 311.13

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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.