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Finding the Fourth Proportional to 171.08, 256.31 and 152.99

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Solution

The fourth proportional to 171.08, 256.31 and 152.99 is: 229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.08 : 256.31 = 152.99 : x
  2. Step 2: Convert to fraction form
    171.08/256.31 = 152.99/x
  3. Step 3: Cross multiply
    171.08x = 256.31 × 152.99
  4. Step 4: Simplify right side
    171.08x = 39,210.82
  5. Step 5: Solve for x
    x = 39,210.82/171.08
  6. Step 6: Final answer
    x = 229.20

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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.