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Finding the Fourth Proportional to 885.94, 1,222.59 and 493.04

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Solution

The fourth proportional to 885.94, 1,222.59 and 493.04 is: 680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.94 : 1,222.59 = 493.04 : x
  2. Step 2: Convert to fraction form
    885.94/1,222.59 = 493.04/x
  3. Step 3: Cross multiply
    885.94x = 1,222.59 × 493.04
  4. Step 4: Simplify right side
    885.94x = 602,783.80
  5. Step 5: Solve for x
    x = 602,783.80/885.94
  6. Step 6: Final answer
    x = 680.39

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Half scale
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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.