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Finding the Fourth Proportional to 313.95, 432.75 and 234.06

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Solution

The fourth proportional to 313.95, 432.75 and 234.06 is: 322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.95 : 432.75 = 234.06 : x
  2. Step 2: Convert to fraction form
    313.95/432.75 = 234.06/x
  3. Step 3: Cross multiply
    313.95x = 432.75 × 234.06
  4. Step 4: Simplify right side
    313.95x = 101,289.47
  5. Step 5: Solve for x
    x = 101,289.47/313.95
  6. Step 6: Final answer
    x = 322.63

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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.