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Finding the Fourth Proportional to 459.12, 688.84 and 170.60

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Solution

The fourth proportional to 459.12, 688.84 and 170.60 is: 255.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.12 : 688.84 = 170.60 : x
  2. Step 2: Convert to fraction form
    459.12/688.84 = 170.60/x
  3. Step 3: Cross multiply
    459.12x = 688.84 × 170.60
  4. Step 4: Simplify right side
    459.12x = 117,516.10
  5. Step 5: Solve for x
    x = 117,516.10/459.12
  6. Step 6: Final answer
    x = 255.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.