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Finding the Fourth Proportional to 887.19, 1,224.21 and 494.19

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Solution

The fourth proportional to 887.19, 1,224.21 and 494.19 is: 681.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.19 : 1,224.21 = 494.19 : x
  2. Step 2: Convert to fraction form
    887.19/1,224.21 = 494.19/x
  3. Step 3: Cross multiply
    887.19x = 1,224.21 × 494.19
  4. Step 4: Simplify right side
    887.19x = 604,992.34
  5. Step 5: Solve for x
    x = 604,992.34/887.19
  6. Step 6: Final answer
    x = 681.92

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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.