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Finding the Fourth Proportional to 966.50, 1,334.87 and 655.46

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Solution

The fourth proportional to 966.50, 1,334.87 and 655.46 is: 905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.50 : 1,334.87 = 655.46 : x
  2. Step 2: Convert to fraction form
    966.50/1,334.87 = 655.46/x
  3. Step 3: Cross multiply
    966.50x = 1,334.87 × 655.46
  4. Step 4: Simplify right side
    966.50x = 874,953.89
  5. Step 5: Solve for x
    x = 874,953.89/966.50
  6. Step 6: Final answer
    x = 905.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.