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Finding the Fourth Proportional to 883.43, 1,218.97 and 572.75

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Solution

The fourth proportional to 883.43, 1,218.97 and 572.75 is: 790.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.43 : 1,218.97 = 572.75 : x
  2. Step 2: Convert to fraction form
    883.43/1,218.97 = 572.75/x
  3. Step 3: Cross multiply
    883.43x = 1,218.97 × 572.75
  4. Step 4: Simplify right side
    883.43x = 698,165.07
  5. Step 5: Solve for x
    x = 698,165.07/883.43
  6. Step 6: Final answer
    x = 790.29

Related Problems

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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.