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Finding the Fourth Proportional to 550.51, 824.50 and 318.82

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Solution

The fourth proportional to 550.51, 824.50 and 318.82 is: 477.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.51 : 824.50 = 318.82 : x
  2. Step 2: Convert to fraction form
    550.51/824.50 = 318.82/x
  3. Step 3: Cross multiply
    550.51x = 824.50 × 318.82
  4. Step 4: Simplify right side
    550.51x = 262,867.50
  5. Step 5: Solve for x
    x = 262,867.50/550.51
  6. Step 6: Final answer
    x = 477.50

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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.