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Finding the Fourth Proportional to 619.51, 929.12 and 180.76

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Solution

The fourth proportional to 619.51, 929.12 and 180.76 is: 271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.51 : 929.12 = 180.76 : x
  2. Step 2: Convert to fraction form
    619.51/929.12 = 180.76/x
  3. Step 3: Cross multiply
    619.51x = 929.12 × 180.76
  4. Step 4: Simplify right side
    619.51x = 167,947.73
  5. Step 5: Solve for x
    x = 167,947.73/619.51
  6. Step 6: Final answer
    x = 271.10

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Double scale
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Similar ratio
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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.