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Finding the Fourth Proportional to 172.59, 237.54 and 156.18

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Solution

The fourth proportional to 172.59, 237.54 and 156.18 is: 214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.59 : 237.54 = 156.18 : x
  2. Step 2: Convert to fraction form
    172.59/237.54 = 156.18/x
  3. Step 3: Cross multiply
    172.59x = 237.54 × 156.18
  4. Step 4: Simplify right side
    172.59x = 37,099.00
  5. Step 5: Solve for x
    x = 37,099.00/172.59
  6. Step 6: Final answer
    x = 214.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.