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Finding the Fourth Proportional to 1,605.39, 2,409.46 and 632.18

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Solution

The fourth proportional to 1,605.39, 2,409.46 and 632.18 is: 948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.39 : 2,409.46 = 632.18 : x
  2. Step 2: Convert to fraction form
    1,605.39/2,409.46 = 632.18/x
  3. Step 3: Cross multiply
    1,605.39x = 2,409.46 × 632.18
  4. Step 4: Simplify right side
    1,605.39x = 1,523,210.98
  5. Step 5: Solve for x
    x = 1,523,210.98/1,605.39
  6. Step 6: Final answer
    x = 948.81

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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.