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Finding the Fourth Proportional to 672.47, 926.73 and 660.50

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Solution

The fourth proportional to 672.47, 926.73 and 660.50 is: 910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.47 : 926.73 = 660.50 : x
  2. Step 2: Convert to fraction form
    672.47/926.73 = 660.50/x
  3. Step 3: Cross multiply
    672.47x = 926.73 × 660.50
  4. Step 4: Simplify right side
    672.47x = 612,104.01
  5. Step 5: Solve for x
    x = 612,104.01/672.47
  6. Step 6: Final answer
    x = 910.23

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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.