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Finding the Fourth Proportional to 231.51, 347.63 and 177.87

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Solution

The fourth proportional to 231.51, 347.63 and 177.87 is: 267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.51 : 347.63 = 177.87 : x
  2. Step 2: Convert to fraction form
    231.51/347.63 = 177.87/x
  3. Step 3: Cross multiply
    231.51x = 347.63 × 177.87
  4. Step 4: Simplify right side
    231.51x = 61,832.06
  5. Step 5: Solve for x
    x = 61,832.06/231.51
  6. Step 6: Final answer
    x = 267.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.