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Finding the Fourth Proportional to 509.60, 764.28 and 167.60

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Solution

The fourth proportional to 509.60, 764.28 and 167.60 is: 251.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.60 : 764.28 = 167.60 : x
  2. Step 2: Convert to fraction form
    509.60/764.28 = 167.60/x
  3. Step 3: Cross multiply
    509.60x = 764.28 × 167.60
  4. Step 4: Simplify right side
    509.60x = 128,093.33
  5. Step 5: Solve for x
    x = 128,093.33/509.60
  6. Step 6: Final answer
    x = 251.36

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1.5x scale

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.