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Finding the Fourth Proportional to 972.14, 1,341.24 and 622.76

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Solution

The fourth proportional to 972.14, 1,341.24 and 622.76 is: 859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.14 : 1,341.24 = 622.76 : x
  2. Step 2: Convert to fraction form
    972.14/1,341.24 = 622.76/x
  3. Step 3: Cross multiply
    972.14x = 1,341.24 × 622.76
  4. Step 4: Simplify right side
    972.14x = 835,270.62
  5. Step 5: Solve for x
    x = 835,270.62/972.14
  6. Step 6: Final answer
    x = 859.21

Related Problems

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Double scale
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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.