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Finding the Fourth Proportional to 795.62, 1,097.72 and 515.86

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Solution

The fourth proportional to 795.62, 1,097.72 and 515.86 is: 711.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.62 : 1,097.72 = 515.86 : x
  2. Step 2: Convert to fraction form
    795.62/1,097.72 = 515.86/x
  3. Step 3: Cross multiply
    795.62x = 1,097.72 × 515.86
  4. Step 4: Simplify right side
    795.62x = 566,272.50
  5. Step 5: Solve for x
    x = 566,272.50/795.62
  6. Step 6: Final answer
    x = 711.74

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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.