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Finding the Fourth Proportional to 116.03, 172.58 and 115.63

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Solution

The fourth proportional to 116.03, 172.58 and 115.63 is: 171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.03 : 172.58 = 115.63 : x
  2. Step 2: Convert to fraction form
    116.03/172.58 = 115.63/x
  3. Step 3: Cross multiply
    116.03x = 172.58 × 115.63
  4. Step 4: Simplify right side
    116.03x = 19,955.07
  5. Step 5: Solve for x
    x = 19,955.07/116.03
  6. Step 6: Final answer
    x = 171.98

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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.