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Finding the Fourth Proportional to 173.72, 261.61 and 151.17

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Solution

The fourth proportional to 173.72, 261.61 and 151.17 is: 227.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.72 : 261.61 = 151.17 : x
  2. Step 2: Convert to fraction form
    173.72/261.61 = 151.17/x
  3. Step 3: Cross multiply
    173.72x = 261.61 × 151.17
  4. Step 4: Simplify right side
    173.72x = 39,547.00
  5. Step 5: Solve for x
    x = 39,547.00/173.72
  6. Step 6: Final answer
    x = 227.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.