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Finding the Fourth Proportional to 313.35, 432.29 and 189.02

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Solution

The fourth proportional to 313.35, 432.29 and 189.02 is: 260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.35 : 432.29 = 189.02 : x
  2. Step 2: Convert to fraction form
    313.35/432.29 = 189.02/x
  3. Step 3: Cross multiply
    313.35x = 432.29 × 189.02
  4. Step 4: Simplify right side
    313.35x = 81,708.35
  5. Step 5: Solve for x
    x = 81,708.35/313.35
  6. Step 6: Final answer
    x = 260.76

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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.