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Finding the Fourth Proportional to 730.40, 1,100.48 and 633.20

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Solution

The fourth proportional to 730.40, 1,100.48 and 633.20 is: 954.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.40 : 1,100.48 = 633.20 : x
  2. Step 2: Convert to fraction form
    730.40/1,100.48 = 633.20/x
  3. Step 3: Cross multiply
    730.40x = 1,100.48 × 633.20
  4. Step 4: Simplify right side
    730.40x = 696,823.94
  5. Step 5: Solve for x
    x = 696,823.94/730.40
  6. Step 6: Final answer
    x = 954.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.