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Finding the Fourth Proportional to 934.73, 1,289.85 and 515.02

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Solution

The fourth proportional to 934.73, 1,289.85 and 515.02 is: 710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.73 : 1,289.85 = 515.02 : x
  2. Step 2: Convert to fraction form
    934.73/1,289.85 = 515.02/x
  3. Step 3: Cross multiply
    934.73x = 1,289.85 × 515.02
  4. Step 4: Simplify right side
    934.73x = 664,298.55
  5. Step 5: Solve for x
    x = 664,298.55/934.73
  6. Step 6: Final answer
    x = 710.68

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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.