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Finding the Fourth Proportional to 660.70, 912.44 and 549.07

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Solution

The fourth proportional to 660.70, 912.44 and 549.07 is: 758.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.70 : 912.44 = 549.07 : x
  2. Step 2: Convert to fraction form
    660.70/912.44 = 549.07/x
  3. Step 3: Cross multiply
    660.70x = 912.44 × 549.07
  4. Step 4: Simplify right side
    660.70x = 500,988.40
  5. Step 5: Solve for x
    x = 500,988.40/660.70
  6. Step 6: Final answer
    x = 758.27

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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.