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Finding the Fourth Proportional to 730.23, 1,008.90 and 650.85

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Solution

The fourth proportional to 730.23, 1,008.90 and 650.85 is: 899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.23 : 1,008.90 = 650.85 : x
  2. Step 2: Convert to fraction form
    730.23/1,008.90 = 650.85/x
  3. Step 3: Cross multiply
    730.23x = 1,008.90 × 650.85
  4. Step 4: Simplify right side
    730.23x = 656,642.57
  5. Step 5: Solve for x
    x = 656,642.57/730.23
  6. Step 6: Final answer
    x = 899.23

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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.