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Finding the Fourth Proportional to 953.91, 1,316.01 and 622.22

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Solution

The fourth proportional to 953.91, 1,316.01 and 622.22 is: 858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.91 : 1,316.01 = 622.22 : x
  2. Step 2: Convert to fraction form
    953.91/1,316.01 = 622.22/x
  3. Step 3: Cross multiply
    953.91x = 1,316.01 × 622.22
  4. Step 4: Simplify right side
    953.91x = 818,847.74
  5. Step 5: Solve for x
    x = 818,847.74/953.91
  6. Step 6: Final answer
    x = 858.41

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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.