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Finding the Fourth Proportional to 2,470.36, 3,705.44 and 621.49

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Solution

The fourth proportional to 2,470.36, 3,705.44 and 621.49 is: 932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,470.36 : 3,705.44 = 621.49 : x
  2. Step 2: Convert to fraction form
    2,470.36/3,705.44 = 621.49/x
  3. Step 3: Cross multiply
    2,470.36x = 3,705.44 × 621.49
  4. Step 4: Simplify right side
    2,470.36x = 2,302,893.91
  5. Step 5: Solve for x
    x = 2,302,893.91/2,470.36
  6. Step 6: Final answer
    x = 932.21

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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.