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Finding the Fourth Proportional to 630.75, 870.37 and 350.96

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Solution

The fourth proportional to 630.75, 870.37 and 350.96 is: 484.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.75 : 870.37 = 350.96 : x
  2. Step 2: Convert to fraction form
    630.75/870.37 = 350.96/x
  3. Step 3: Cross multiply
    630.75x = 870.37 × 350.96
  4. Step 4: Simplify right side
    630.75x = 305,465.06
  5. Step 5: Solve for x
    x = 305,465.06/630.75
  6. Step 6: Final answer
    x = 484.29

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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.