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Finding the Fourth Proportional to 936.54, 1,402.08 and 740.18

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Solution

The fourth proportional to 936.54, 1,402.08 and 740.18 is: 1,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.54 : 1,402.08 = 740.18 : x
  2. Step 2: Convert to fraction form
    936.54/1,402.08 = 740.18/x
  3. Step 3: Cross multiply
    936.54x = 1,402.08 × 740.18
  4. Step 4: Simplify right side
    936.54x = 1,037,791.57
  5. Step 5: Solve for x
    x = 1,037,791.57/936.54
  6. Step 6: Final answer
    x = 1,108.11

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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.