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Finding the Fourth Proportional to 954.60, 1,424.98 and 825.42

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Solution

The fourth proportional to 954.60, 1,424.98 and 825.42 is: 1,232.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.60 : 1,424.98 = 825.42 : x
  2. Step 2: Convert to fraction form
    954.60/1,424.98 = 825.42/x
  3. Step 3: Cross multiply
    954.60x = 1,424.98 × 825.42
  4. Step 4: Simplify right side
    954.60x = 1,176,213.37
  5. Step 5: Solve for x
    x = 1,176,213.37/954.60
  6. Step 6: Final answer
    x = 1,232.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.