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Finding the Fourth Proportional to 960.01, 1,323.58 and 627.91

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Solution

The fourth proportional to 960.01, 1,323.58 and 627.91 is: 865.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.01 : 1,323.58 = 627.91 : x
  2. Step 2: Convert to fraction form
    960.01/1,323.58 = 627.91/x
  3. Step 3: Cross multiply
    960.01x = 1,323.58 × 627.91
  4. Step 4: Simplify right side
    960.01x = 831,089.12
  5. Step 5: Solve for x
    x = 831,089.12/960.01
  6. Step 6: Final answer
    x = 865.71

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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.