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Finding the Fourth Proportional to 191.80, 265.08 and 152.92

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Solution

The fourth proportional to 191.80, 265.08 and 152.92 is: 211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.80 : 265.08 = 152.92 : x
  2. Step 2: Convert to fraction form
    191.80/265.08 = 152.92/x
  3. Step 3: Cross multiply
    191.80x = 265.08 × 152.92
  4. Step 4: Simplify right side
    191.80x = 40,536.03
  5. Step 5: Solve for x
    x = 40,536.03/191.80
  6. Step 6: Final answer
    x = 211.35

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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.