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Finding the Fourth Proportional to 334.16, 459.72 and 316.88

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Solution

The fourth proportional to 334.16, 459.72 and 316.88 is: 435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.16 : 459.72 = 316.88 : x
  2. Step 2: Convert to fraction form
    334.16/459.72 = 316.88/x
  3. Step 3: Cross multiply
    334.16x = 459.72 × 316.88
  4. Step 4: Simplify right side
    334.16x = 145,676.07
  5. Step 5: Solve for x
    x = 145,676.07/334.16
  6. Step 6: Final answer
    x = 435.95

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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.