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Finding the Fourth Proportional to 660.40, 951.36 and 660.40

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Solution

The fourth proportional to 660.40, 951.36 and 660.40 is: 951.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.40 : 951.36 = 660.40 : x
  2. Step 2: Convert to fraction form
    660.40/951.36 = 660.40/x
  3. Step 3: Cross multiply
    660.40x = 951.36 × 660.40
  4. Step 4: Simplify right side
    660.40x = 628,278.14
  5. Step 5: Solve for x
    x = 628,278.14/660.40
  6. Step 6: Final answer
    x = 951.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.