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Finding the Fourth Proportional to 518.67, 776.79 and 373.68

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Solution

The fourth proportional to 518.67, 776.79 and 373.68 is: 559.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.67 : 776.79 = 373.68 : x
  2. Step 2: Convert to fraction form
    518.67/776.79 = 373.68/x
  3. Step 3: Cross multiply
    518.67x = 776.79 × 373.68
  4. Step 4: Simplify right side
    518.67x = 290,270.89
  5. Step 5: Solve for x
    x = 290,270.89/518.67
  6. Step 6: Final answer
    x = 559.64

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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.