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Finding the Fourth Proportional to 310.23, 464.87 and 155.72

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Solution

The fourth proportional to 310.23, 464.87 and 155.72 is: 233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.23 : 464.87 = 155.72 : x
  2. Step 2: Convert to fraction form
    310.23/464.87 = 155.72/x
  3. Step 3: Cross multiply
    310.23x = 464.87 × 155.72
  4. Step 4: Simplify right side
    310.23x = 72,391.11
  5. Step 5: Solve for x
    x = 72,391.11/310.23
  6. Step 6: Final answer
    x = 233.35

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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.