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Finding the Fourth Proportional to 885.88, 1,222.45 and 554.37

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Solution

The fourth proportional to 885.88, 1,222.45 and 554.37 is: 764.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.88 : 1,222.45 = 554.37 : x
  2. Step 2: Convert to fraction form
    885.88/1,222.45 = 554.37/x
  3. Step 3: Cross multiply
    885.88x = 1,222.45 × 554.37
  4. Step 4: Simplify right side
    885.88x = 677,689.61
  5. Step 5: Solve for x
    x = 677,689.61/885.88
  6. Step 6: Final answer
    x = 764.99

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.