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Finding the Fourth Proportional to 313.36, 432.43 and 173.48

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Solution

The fourth proportional to 313.36, 432.43 and 173.48 is: 239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.36 : 432.43 = 173.48 : x
  2. Step 2: Convert to fraction form
    313.36/432.43 = 173.48/x
  3. Step 3: Cross multiply
    313.36x = 432.43 × 173.48
  4. Step 4: Simplify right side
    313.36x = 75,017.96
  5. Step 5: Solve for x
    x = 75,017.96/313.36
  6. Step 6: Final answer
    x = 239.40

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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.