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Finding the Fourth Proportional to 518.95, 716.40 and 332.72

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Solution

The fourth proportional to 518.95, 716.40 and 332.72 is: 459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.95 : 716.40 = 332.72 : x
  2. Step 2: Convert to fraction form
    518.95/716.40 = 332.72/x
  3. Step 3: Cross multiply
    518.95x = 716.40 × 332.72
  4. Step 4: Simplify right side
    518.95x = 238,360.61
  5. Step 5: Solve for x
    x = 238,360.61/518.95
  6. Step 6: Final answer
    x = 459.31

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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.