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Finding the Fourth Proportional to 310.04, 464.70 and 127.40

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Solution

The fourth proportional to 310.04, 464.70 and 127.40 is: 190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.04 : 464.70 = 127.40 : x
  2. Step 2: Convert to fraction form
    310.04/464.70 = 127.40/x
  3. Step 3: Cross multiply
    310.04x = 464.70 × 127.40
  4. Step 4: Simplify right side
    310.04x = 59,202.78
  5. Step 5: Solve for x
    x = 59,202.78/310.04
  6. Step 6: Final answer
    x = 190.95

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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.