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Finding the Fourth Proportional to 967.74, 1,335.47 and 525.64

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Solution

The fourth proportional to 967.74, 1,335.47 and 525.64 is: 725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.74 : 1,335.47 = 525.64 : x
  2. Step 2: Convert to fraction form
    967.74/1,335.47 = 525.64/x
  3. Step 3: Cross multiply
    967.74x = 1,335.47 × 525.64
  4. Step 4: Simplify right side
    967.74x = 701,976.45
  5. Step 5: Solve for x
    x = 701,976.45/967.74
  6. Step 6: Final answer
    x = 725.38

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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.