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Finding the Fourth Proportional to 660.12, 910.24 and 560.16

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Solution

The fourth proportional to 660.12, 910.24 and 560.16 is: 772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.12 : 910.24 = 560.16 : x
  2. Step 2: Convert to fraction form
    660.12/910.24 = 560.16/x
  3. Step 3: Cross multiply
    660.12x = 910.24 × 560.16
  4. Step 4: Simplify right side
    660.12x = 509,880.04
  5. Step 5: Solve for x
    x = 509,880.04/660.12
  6. Step 6: Final answer
    x = 772.41

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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.