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Finding the Fourth Proportional to 2,304.80, 3,457.79 and 661.45

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Solution

The fourth proportional to 2,304.80, 3,457.79 and 661.45 is: 992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,304.80 : 3,457.79 = 661.45 : x
  2. Step 2: Convert to fraction form
    2,304.80/3,457.79 = 661.45/x
  3. Step 3: Cross multiply
    2,304.80x = 3,457.79 × 661.45
  4. Step 4: Simplify right side
    2,304.80x = 2,287,134.60
  5. Step 5: Solve for x
    x = 2,287,134.60/2,304.80
  6. Step 6: Final answer
    x = 992.34

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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.