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Finding the Fourth Proportional to 313.35, 432.38 and 180.56

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Solution

The fourth proportional to 313.35, 432.38 and 180.56 is: 249.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.35 : 432.38 = 180.56 : x
  2. Step 2: Convert to fraction form
    313.35/432.38 = 180.56/x
  3. Step 3: Cross multiply
    313.35x = 432.38 × 180.56
  4. Step 4: Simplify right side
    313.35x = 78,070.53
  5. Step 5: Solve for x
    x = 78,070.53/313.35
  6. Step 6: Final answer
    x = 249.15

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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.