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Finding the Fourth Proportional to 1,516.88, 2,275.43 and 490.88

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Solution

The fourth proportional to 1,516.88, 2,275.43 and 490.88 is: 736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.88 : 2,275.43 = 490.88 : x
  2. Step 2: Convert to fraction form
    1,516.88/2,275.43 = 490.88/x
  3. Step 3: Cross multiply
    1,516.88x = 2,275.43 × 490.88
  4. Step 4: Simplify right side
    1,516.88x = 1,116,952.93
  5. Step 5: Solve for x
    x = 1,116,952.93/1,516.88
  6. Step 6: Final answer
    x = 736.35

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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.