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Finding the Fourth Proportional to 615.07, 922.42 and 517.60

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Solution

The fourth proportional to 615.07, 922.42 and 517.60 is: 776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.07 : 922.42 = 517.60 : x
  2. Step 2: Convert to fraction form
    615.07/922.42 = 517.60/x
  3. Step 3: Cross multiply
    615.07x = 922.42 × 517.60
  4. Step 4: Simplify right side
    615.07x = 477,444.59
  5. Step 5: Solve for x
    x = 477,444.59/615.07
  6. Step 6: Final answer
    x = 776.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.