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Finding the Fourth Proportional to 1,471.15, 2,206.65 and 375.48

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Solution

The fourth proportional to 1,471.15, 2,206.65 and 375.48 is: 563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.15 : 2,206.65 = 375.48 : x
  2. Step 2: Convert to fraction form
    1,471.15/2,206.65 = 375.48/x
  3. Step 3: Cross multiply
    1,471.15x = 2,206.65 × 375.48
  4. Step 4: Simplify right side
    1,471.15x = 828,554.35
  5. Step 5: Solve for x
    x = 828,554.35/1,471.15
  6. Step 6: Final answer
    x = 563.20

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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.