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Finding the Fourth Proportional to 1,642.91, 2,464.21 and 655.46

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Solution

The fourth proportional to 1,642.91, 2,464.21 and 655.46 is: 983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.91 : 2,464.21 = 655.46 : x
  2. Step 2: Convert to fraction form
    1,642.91/2,464.21 = 655.46/x
  3. Step 3: Cross multiply
    1,642.91x = 2,464.21 × 655.46
  4. Step 4: Simplify right side
    1,642.91x = 1,615,186.09
  5. Step 5: Solve for x
    x = 1,615,186.09/1,642.91
  6. Step 6: Final answer
    x = 983.13

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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.