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Finding the Fourth Proportional to 176.30, 265.56 and 172.80

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Solution

The fourth proportional to 176.30, 265.56 and 172.80 is: 260.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.30 : 265.56 = 172.80 : x
  2. Step 2: Convert to fraction form
    176.30/265.56 = 172.80/x
  3. Step 3: Cross multiply
    176.30x = 265.56 × 172.80
  4. Step 4: Simplify right side
    176.30x = 45,888.77
  5. Step 5: Solve for x
    x = 45,888.77/176.30
  6. Step 6: Final answer
    x = 260.29

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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.