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Finding the Fourth Proportional to 954.66, 1,432.20 and 305.46

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Solution

The fourth proportional to 954.66, 1,432.20 and 305.46 is: 458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.66 : 1,432.20 = 305.46 : x
  2. Step 2: Convert to fraction form
    954.66/1,432.20 = 305.46/x
  3. Step 3: Cross multiply
    954.66x = 1,432.20 × 305.46
  4. Step 4: Simplify right side
    954.66x = 437,479.81
  5. Step 5: Solve for x
    x = 437,479.81/954.66
  6. Step 6: Final answer
    x = 458.26

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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.