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Finding the Fourth Proportional to 622.92, 859.08 and 457.11

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Solution

The fourth proportional to 622.92, 859.08 and 457.11 is: 630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.92 : 859.08 = 457.11 : x
  2. Step 2: Convert to fraction form
    622.92/859.08 = 457.11/x
  3. Step 3: Cross multiply
    622.92x = 859.08 × 457.11
  4. Step 4: Simplify right side
    622.92x = 392,694.06
  5. Step 5: Solve for x
    x = 392,694.06/622.92
  6. Step 6: Final answer
    x = 630.41

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Double scale
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Similar ratio
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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.