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Finding the Fourth Proportional to 954.91, 1,317.39 and 623.22

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Solution

The fourth proportional to 954.91, 1,317.39 and 623.22 is: 859.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.91 : 1,317.39 = 623.22 : x
  2. Step 2: Convert to fraction form
    954.91/1,317.39 = 623.22/x
  3. Step 3: Cross multiply
    954.91x = 1,317.39 × 623.22
  4. Step 4: Simplify right side
    954.91x = 821,023.80
  5. Step 5: Solve for x
    x = 821,023.80/954.91
  6. Step 6: Final answer
    x = 859.79

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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.