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Finding the Fourth Proportional to 117.55, 175.51 and 97.30

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Solution

The fourth proportional to 117.55, 175.51 and 97.30 is: 145.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.55 : 175.51 = 97.30 : x
  2. Step 2: Convert to fraction form
    117.55/175.51 = 97.30/x
  3. Step 3: Cross multiply
    117.55x = 175.51 × 97.30
  4. Step 4: Simplify right side
    117.55x = 17,077.12
  5. Step 5: Solve for x
    x = 17,077.12/117.55
  6. Step 6: Final answer
    x = 145.28

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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.