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Finding the Fourth Proportional to 503.40, 755.10 and 178.71

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Solution

The fourth proportional to 503.40, 755.10 and 178.71 is: 268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.40 : 755.10 = 178.71 : x
  2. Step 2: Convert to fraction form
    503.40/755.10 = 178.71/x
  3. Step 3: Cross multiply
    503.40x = 755.10 × 178.71
  4. Step 4: Simplify right side
    503.40x = 134,943.92
  5. Step 5: Solve for x
    x = 134,943.92/503.40
  6. Step 6: Final answer
    x = 268.07

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Double scale
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Similar ratio
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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.