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Finding the Fourth Proportional to 1,646.68, 2,470.62 and 722.06

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Solution

The fourth proportional to 1,646.68, 2,470.62 and 722.06 is: 1,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.68 : 2,470.62 = 722.06 : x
  2. Step 2: Convert to fraction form
    1,646.68/2,470.62 = 722.06/x
  3. Step 3: Cross multiply
    1,646.68x = 2,470.62 × 722.06
  4. Step 4: Simplify right side
    1,646.68x = 1,783,935.88
  5. Step 5: Solve for x
    x = 1,783,935.88/1,646.68
  6. Step 6: Final answer
    x = 1,083.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.