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Finding the Fourth Proportional to 639.47, 964.56 and 601.54

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Solution

The fourth proportional to 639.47, 964.56 and 601.54 is: 907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639.47 : 964.56 = 601.54 : x
  2. Step 2: Convert to fraction form
    639.47/964.56 = 601.54/x
  3. Step 3: Cross multiply
    639.47x = 964.56 × 601.54
  4. Step 4: Simplify right side
    639.47x = 580,219.24
  5. Step 5: Solve for x
    x = 580,219.24/639.47
  6. Step 6: Final answer
    x = 907.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.