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Finding the Fourth Proportional to 954.47, 1,431.42 and 460.58

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Solution

The fourth proportional to 954.47, 1,431.42 and 460.58 is: 690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.47 : 1,431.42 = 460.58 : x
  2. Step 2: Convert to fraction form
    954.47/1,431.42 = 460.58/x
  3. Step 3: Cross multiply
    954.47x = 1,431.42 × 460.58
  4. Step 4: Simplify right side
    954.47x = 659,276.27
  5. Step 5: Solve for x
    x = 659,276.27/954.47
  6. Step 6: Final answer
    x = 690.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.