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Finding the Fourth Proportional to 960.58, 1,440.96 and 383.50

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Solution

The fourth proportional to 960.58, 1,440.96 and 383.50 is: 575.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.58 : 1,440.96 = 383.50 : x
  2. Step 2: Convert to fraction form
    960.58/1,440.96 = 383.50/x
  3. Step 3: Cross multiply
    960.58x = 1,440.96 × 383.50
  4. Step 4: Simplify right side
    960.58x = 552,608.16
  5. Step 5: Solve for x
    x = 552,608.16/960.58
  6. Step 6: Final answer
    x = 575.29

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1.5x scale

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.