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Finding the Fourth Proportional to 730.32, 1,090.18 and 628.26

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Solution

The fourth proportional to 730.32, 1,090.18 and 628.26 is: 937.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.32 : 1,090.18 = 628.26 : x
  2. Step 2: Convert to fraction form
    730.32/1,090.18 = 628.26/x
  3. Step 3: Cross multiply
    730.32x = 1,090.18 × 628.26
  4. Step 4: Simplify right side
    730.32x = 684,916.49
  5. Step 5: Solve for x
    x = 684,916.49/730.32
  6. Step 6: Final answer
    x = 937.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.