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Finding the Fourth Proportional to 887.17, 1,224.30 and 494.19

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Solution

The fourth proportional to 887.17, 1,224.30 and 494.19 is: 681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.17 : 1,224.30 = 494.19 : x
  2. Step 2: Convert to fraction form
    887.17/1,224.30 = 494.19/x
  3. Step 3: Cross multiply
    887.17x = 1,224.30 × 494.19
  4. Step 4: Simplify right side
    887.17x = 605,036.82
  5. Step 5: Solve for x
    x = 605,036.82/887.17
  6. Step 6: Final answer
    x = 681.99

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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.