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Finding the Fourth Proportional to 723.60, 955.80 and 723.60

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Solution

The fourth proportional to 723.60, 955.80 and 723.60 is: 955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.60 : 955.80 = 723.60 : x
  2. Step 2: Convert to fraction form
    723.60/955.80 = 723.60/x
  3. Step 3: Cross multiply
    723.60x = 955.80 × 723.60
  4. Step 4: Simplify right side
    723.60x = 691,616.88
  5. Step 5: Solve for x
    x = 691,616.88/723.60
  6. Step 6: Final answer
    x = 955.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.