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Finding the Fourth Proportional to 615.04, 926.15 and 518.38

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Solution

The fourth proportional to 615.04, 926.15 and 518.38 is: 780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.04 : 926.15 = 518.38 : x
  2. Step 2: Convert to fraction form
    615.04/926.15 = 518.38/x
  3. Step 3: Cross multiply
    615.04x = 926.15 × 518.38
  4. Step 4: Simplify right side
    615.04x = 480,097.64
  5. Step 5: Solve for x
    x = 480,097.64/615.04
  6. Step 6: Final answer
    x = 780.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.