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Finding the Fourth Proportional to 960.21, 1,440.75 and 473.19

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Solution

The fourth proportional to 960.21, 1,440.75 and 473.19 is: 710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.21 : 1,440.75 = 473.19 : x
  2. Step 2: Convert to fraction form
    960.21/1,440.75 = 473.19/x
  3. Step 3: Cross multiply
    960.21x = 1,440.75 × 473.19
  4. Step 4: Simplify right side
    960.21x = 681,748.49
  5. Step 5: Solve for x
    x = 681,748.49/960.21
  6. Step 6: Final answer
    x = 710.00

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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.