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Finding the Fourth Proportional to 691.92, 954.75 and 443.16

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Solution

The fourth proportional to 691.92, 954.75 and 443.16 is: 611.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.92 : 954.75 = 443.16 : x
  2. Step 2: Convert to fraction form
    691.92/954.75 = 443.16/x
  3. Step 3: Cross multiply
    691.92x = 954.75 × 443.16
  4. Step 4: Simplify right side
    691.92x = 423,107.01
  5. Step 5: Solve for x
    x = 423,107.01/691.92
  6. Step 6: Final answer
    x = 611.50

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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.