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Finding the Fourth Proportional to 237.30, 354.58 and 172

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Solution

The fourth proportional to 237.30, 354.58 and 172 is: 257.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.30 : 354.58 = 172 : x
  2. Step 2: Convert to fraction form
    237.30/354.58 = 172/x
  3. Step 3: Cross multiply
    237.30x = 354.58 × 172
  4. Step 4: Simplify right side
    237.30x = 60,987.76
  5. Step 5: Solve for x
    x = 60,987.76/237.30
  6. Step 6: Final answer
    x = 257.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.