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Finding the Fourth Proportional to 502.35, 753.53 and 330.11

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Solution

The fourth proportional to 502.35, 753.53 and 330.11 is: 495.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.35 : 753.53 = 330.11 : x
  2. Step 2: Convert to fraction form
    502.35/753.53 = 330.11/x
  3. Step 3: Cross multiply
    502.35x = 753.53 × 330.11
  4. Step 4: Simplify right side
    502.35x = 248,747.79
  5. Step 5: Solve for x
    x = 248,747.79/502.35
  6. Step 6: Final answer
    x = 495.17

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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.