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Finding the Fourth Proportional to 518.58, 716.58 and 506.70

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Solution

The fourth proportional to 518.58, 716.58 and 506.70 is: 700.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.58 : 716.58 = 506.70 : x
  2. Step 2: Convert to fraction form
    518.58/716.58 = 506.70/x
  3. Step 3: Cross multiply
    518.58x = 716.58 × 506.70
  4. Step 4: Simplify right side
    518.58x = 363,091.09
  5. Step 5: Solve for x
    x = 363,091.09/518.58
  6. Step 6: Final answer
    x = 700.16

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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.