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Finding the Fourth Proportional to 954.41, 1,432.28 and 338.11

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Solution

The fourth proportional to 954.41, 1,432.28 and 338.11 is: 507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.41 : 1,432.28 = 338.11 : x
  2. Step 2: Convert to fraction form
    954.41/1,432.28 = 338.11/x
  3. Step 3: Cross multiply
    954.41x = 1,432.28 × 338.11
  4. Step 4: Simplify right side
    954.41x = 484,265.46
  5. Step 5: Solve for x
    x = 484,265.46/954.41
  6. Step 6: Final answer
    x = 507.40

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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.