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Finding the Fourth Proportional to 960.72, 1,326.12 and 567.69

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Solution

The fourth proportional to 960.72, 1,326.12 and 567.69 is: 783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.72 : 1,326.12 = 567.69 : x
  2. Step 2: Convert to fraction form
    960.72/1,326.12 = 567.69/x
  3. Step 3: Cross multiply
    960.72x = 1,326.12 × 567.69
  4. Step 4: Simplify right side
    960.72x = 752,825.06
  5. Step 5: Solve for x
    x = 752,825.06/960.72
  6. Step 6: Final answer
    x = 783.61

Related Problems

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Half scale
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Double scale
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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.