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Finding the Fourth Proportional to 730.01, 1,007.34 and 450.20

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Solution

The fourth proportional to 730.01, 1,007.34 and 450.20 is: 621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.01 : 1,007.34 = 450.20 : x
  2. Step 2: Convert to fraction form
    730.01/1,007.34 = 450.20/x
  3. Step 3: Cross multiply
    730.01x = 1,007.34 × 450.20
  4. Step 4: Simplify right side
    730.01x = 453,504.47
  5. Step 5: Solve for x
    x = 453,504.47/730.01
  6. Step 6: Final answer
    x = 621.23

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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.