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Finding the Fourth Proportional to 1,462.66, 2,191.86 and 731.23

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Solution

The fourth proportional to 1,462.66, 2,191.86 and 731.23 is: 1,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462.66 : 2,191.86 = 731.23 : x
  2. Step 2: Convert to fraction form
    1,462.66/2,191.86 = 731.23/x
  3. Step 3: Cross multiply
    1,462.66x = 2,191.86 × 731.23
  4. Step 4: Simplify right side
    1,462.66x = 1,602,748.31
  5. Step 5: Solve for x
    x = 1,602,748.31/1,462.66
  6. Step 6: Final answer
    x = 1,095.78

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Double scale
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1.5x scale

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.