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Finding the Fourth Proportional to 954.59, 1,316.45 and 622.89

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Solution

The fourth proportional to 954.59, 1,316.45 and 622.89 is: 859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.59 : 1,316.45 = 622.89 : x
  2. Step 2: Convert to fraction form
    954.59/1,316.45 = 622.89/x
  3. Step 3: Cross multiply
    954.59x = 1,316.45 × 622.89
  4. Step 4: Simplify right side
    954.59x = 820,003.54
  5. Step 5: Solve for x
    x = 820,003.54/954.59
  6. Step 6: Final answer
    x = 859.01

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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.