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Finding the Fourth Proportional to 703.20, 972.18 and 673.68

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Solution

The fourth proportional to 703.20, 972.18 and 673.68 is: 931.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.20 : 972.18 = 673.68 : x
  2. Step 2: Convert to fraction form
    703.20/972.18 = 673.68/x
  3. Step 3: Cross multiply
    703.20x = 972.18 × 673.68
  4. Step 4: Simplify right side
    703.20x = 654,938.22
  5. Step 5: Solve for x
    x = 654,938.22/703.20
  6. Step 6: Final answer
    x = 931.37

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.