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Finding the Fourth Proportional to 1,235.60, 1,852.19 and 618.38

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Solution

The fourth proportional to 1,235.60, 1,852.19 and 618.38 is: 926.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.60 : 1,852.19 = 618.38 : x
  2. Step 2: Convert to fraction form
    1,235.60/1,852.19 = 618.38/x
  3. Step 3: Cross multiply
    1,235.60x = 1,852.19 × 618.38
  4. Step 4: Simplify right side
    1,235.60x = 1,145,357.25
  5. Step 5: Solve for x
    x = 1,145,357.25/1,235.60
  6. Step 6: Final answer
    x = 926.96

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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.