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Finding the Fourth Proportional to 1,628.50, 2,442.69 and 474.22

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Solution

The fourth proportional to 1,628.50, 2,442.69 and 474.22 is: 711.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.50 : 2,442.69 = 474.22 : x
  2. Step 2: Convert to fraction form
    1,628.50/2,442.69 = 474.22/x
  3. Step 3: Cross multiply
    1,628.50x = 2,442.69 × 474.22
  4. Step 4: Simplify right side
    1,628.50x = 1,158,363.97
  5. Step 5: Solve for x
    x = 1,158,363.97/1,628.50
  6. Step 6: Final answer
    x = 711.31

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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.