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Finding the Fourth Proportional to 367.70, 506.56 and 315.07

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Solution

The fourth proportional to 367.70, 506.56 and 315.07 is: 434.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.70 : 506.56 = 315.07 : x
  2. Step 2: Convert to fraction form
    367.70/506.56 = 315.07/x
  3. Step 3: Cross multiply
    367.70x = 506.56 × 315.07
  4. Step 4: Simplify right side
    367.70x = 159,602.34
  5. Step 5: Solve for x
    x = 159,602.34/367.70
  6. Step 6: Final answer
    x = 434.06

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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.