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Finding the Fourth Proportional to 1,570.99, 2,356.74 and 475.26

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Solution

The fourth proportional to 1,570.99, 2,356.74 and 475.26 is: 712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570.99 : 2,356.74 = 475.26 : x
  2. Step 2: Convert to fraction form
    1,570.99/2,356.74 = 475.26/x
  3. Step 3: Cross multiply
    1,570.99x = 2,356.74 × 475.26
  4. Step 4: Simplify right side
    1,570.99x = 1,120,061.88
  5. Step 5: Solve for x
    x = 1,120,061.88/1,570.99
  6. Step 6: Final answer
    x = 712.97

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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.