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Finding the Fourth Proportional to 885.56, 1,326.52 and 519.47

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Solution

The fourth proportional to 885.56, 1,326.52 and 519.47 is: 778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.56 : 1,326.52 = 519.47 : x
  2. Step 2: Convert to fraction form
    885.56/1,326.52 = 519.47/x
  3. Step 3: Cross multiply
    885.56x = 1,326.52 × 519.47
  4. Step 4: Simplify right side
    885.56x = 689,087.07
  5. Step 5: Solve for x
    x = 689,087.07/885.56
  6. Step 6: Final answer
    x = 778.13

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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.