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Finding the Fourth Proportional to 740.73, 1,111.02 and 247.14

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Solution

The fourth proportional to 740.73, 1,111.02 and 247.14 is: 370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.73 : 1,111.02 = 247.14 : x
  2. Step 2: Convert to fraction form
    740.73/1,111.02 = 247.14/x
  3. Step 3: Cross multiply
    740.73x = 1,111.02 × 247.14
  4. Step 4: Simplify right side
    740.73x = 274,577.48
  5. Step 5: Solve for x
    x = 274,577.48/740.73
  6. Step 6: Final answer
    x = 370.68

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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.