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Finding the Fourth Proportional to 708.43, 977.52 and 446.26

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Solution

The fourth proportional to 708.43, 977.52 and 446.26 is: 615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.43 : 977.52 = 446.26 : x
  2. Step 2: Convert to fraction form
    708.43/977.52 = 446.26/x
  3. Step 3: Cross multiply
    708.43x = 977.52 × 446.26
  4. Step 4: Simplify right side
    708.43x = 436,228.08
  5. Step 5: Solve for x
    x = 436,228.08/708.43
  6. Step 6: Final answer
    x = 615.77

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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.