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Finding the Fourth Proportional to 519.93, 715.73 and 401.67

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Solution

The fourth proportional to 519.93, 715.73 and 401.67 is: 552.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.93 : 715.73 = 401.67 : x
  2. Step 2: Convert to fraction form
    519.93/715.73 = 401.67/x
  3. Step 3: Cross multiply
    519.93x = 715.73 × 401.67
  4. Step 4: Simplify right side
    519.93x = 287,485.26
  5. Step 5: Solve for x
    x = 287,485.26/519.93
  6. Step 6: Final answer
    x = 552.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.