Home / 426.14-639.26-152.16

Finding the Fourth Proportional to 426.14, 639.26 and 152.16

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Solution

The fourth proportional to 426.14, 639.26 and 152.16 is: 228.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.14 : 639.26 = 152.16 : x
  2. Step 2: Convert to fraction form
    426.14/639.26 = 152.16/x
  3. Step 3: Cross multiply
    426.14x = 639.26 × 152.16
  4. Step 4: Simplify right side
    426.14x = 97,269.80
  5. Step 5: Solve for x
    x = 97,269.80/426.14
  6. Step 6: Final answer
    x = 228.26

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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.