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Finding the Fourth Proportional to 356.16, 534.33 and 171.20

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Solution

The fourth proportional to 356.16, 534.33 and 171.20 is: 256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.16 : 534.33 = 171.20 : x
  2. Step 2: Convert to fraction form
    356.16/534.33 = 171.20/x
  3. Step 3: Cross multiply
    356.16x = 534.33 × 171.20
  4. Step 4: Simplify right side
    356.16x = 91,477.30
  5. Step 5: Solve for x
    x = 91,477.30/356.16
  6. Step 6: Final answer
    x = 256.84

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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.