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Finding the Fourth Proportional to 960.02, 1,440.50 and 570.02

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Solution

The fourth proportional to 960.02, 1,440.50 and 570.02 is: 855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.02 : 1,440.50 = 570.02 : x
  2. Step 2: Convert to fraction form
    960.02/1,440.50 = 570.02/x
  3. Step 3: Cross multiply
    960.02x = 1,440.50 × 570.02
  4. Step 4: Simplify right side
    960.02x = 821,113.81
  5. Step 5: Solve for x
    x = 821,113.81/960.02
  6. Step 6: Final answer
    x = 855.31

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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.