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Finding the Fourth Proportional to 964.61, 1,446.80 and 416.34

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Solution

The fourth proportional to 964.61, 1,446.80 and 416.34 is: 624.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.61 : 1,446.80 = 416.34 : x
  2. Step 2: Convert to fraction form
    964.61/1,446.80 = 416.34/x
  3. Step 3: Cross multiply
    964.61x = 1,446.80 × 416.34
  4. Step 4: Simplify right side
    964.61x = 602,358.63
  5. Step 5: Solve for x
    x = 602,358.63/964.61
  6. Step 6: Final answer
    x = 624.46

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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.