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Finding the Fourth Proportional to 930.29, 1,395.43 and 382.34

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Solution

The fourth proportional to 930.29, 1,395.43 and 382.34 is: 573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.29 : 1,395.43 = 382.34 : x
  2. Step 2: Convert to fraction form
    930.29/1,395.43 = 382.34/x
  3. Step 3: Cross multiply
    930.29x = 1,395.43 × 382.34
  4. Step 4: Simplify right side
    930.29x = 533,531.24
  5. Step 5: Solve for x
    x = 533,531.24/930.29
  6. Step 6: Final answer
    x = 573.51

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.