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Finding the Fourth Proportional to 714.66, 986.67 and 548.55

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Solution

The fourth proportional to 714.66, 986.67 and 548.55 is: 757.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.66 : 986.67 = 548.55 : x
  2. Step 2: Convert to fraction form
    714.66/986.67 = 548.55/x
  3. Step 3: Cross multiply
    714.66x = 986.67 × 548.55
  4. Step 4: Simplify right side
    714.66x = 541,237.83
  5. Step 5: Solve for x
    x = 541,237.83/714.66
  6. Step 6: Final answer
    x = 757.34

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1.5x scale

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.