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Finding the Fourth Proportional to 459.14, 688.82 and 170.58

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Solution

The fourth proportional to 459.14, 688.82 and 170.58 is: 255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.14 : 688.82 = 170.58 : x
  2. Step 2: Convert to fraction form
    459.14/688.82 = 170.58/x
  3. Step 3: Cross multiply
    459.14x = 688.82 × 170.58
  4. Step 4: Simplify right side
    459.14x = 117,498.92
  5. Step 5: Solve for x
    x = 117,498.92/459.14
  6. Step 6: Final answer
    x = 255.91

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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.