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Finding the Fourth Proportional to 459.04, 688.32 and 170.40

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Solution

The fourth proportional to 459.04, 688.32 and 170.40 is: 255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.04 : 688.32 = 170.40 : x
  2. Step 2: Convert to fraction form
    459.04/688.32 = 170.40/x
  3. Step 3: Cross multiply
    459.04x = 688.32 × 170.40
  4. Step 4: Simplify right side
    459.04x = 117,289.73
  5. Step 5: Solve for x
    x = 117,289.73/459.04
  6. Step 6: Final answer
    x = 255.51

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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.