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Finding the Fourth Proportional to 740.90, 986.07 and 740.90

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Solution

The fourth proportional to 740.90, 986.07 and 740.90 is: 986.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.90 : 986.07 = 740.90 : x
  2. Step 2: Convert to fraction form
    740.90/986.07 = 740.90/x
  3. Step 3: Cross multiply
    740.90x = 986.07 × 740.90
  4. Step 4: Simplify right side
    740.90x = 730,575.56
  5. Step 5: Solve for x
    x = 730,575.56/740.90
  6. Step 6: Final answer
    x = 986.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.