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Finding the Fourth Proportional to 887.69, 1,224.61 and 572.84

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Solution

The fourth proportional to 887.69, 1,224.61 and 572.84 is: 790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.69 : 1,224.61 = 572.84 : x
  2. Step 2: Convert to fraction form
    887.69/1,224.61 = 572.84/x
  3. Step 3: Cross multiply
    887.69x = 1,224.61 × 572.84
  4. Step 4: Simplify right side
    887.69x = 701,505.59
  5. Step 5: Solve for x
    x = 701,505.59/887.69
  6. Step 6: Final answer
    x = 790.26

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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.