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Finding the Fourth Proportional to 172.50, 237.50 and 147.56

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Solution

The fourth proportional to 172.50, 237.50 and 147.56 is: 203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.50 : 237.50 = 147.56 : x
  2. Step 2: Convert to fraction form
    172.50/237.50 = 147.56/x
  3. Step 3: Cross multiply
    172.50x = 237.50 × 147.56
  4. Step 4: Simplify right side
    172.50x = 35,045.50
  5. Step 5: Solve for x
    x = 35,045.50/172.50
  6. Step 6: Final answer
    x = 203.16

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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.