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Finding the Fourth Proportional to 887.46, 1,224.46 and 607.78

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Solution

The fourth proportional to 887.46, 1,224.46 and 607.78 is: 838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.46 : 1,224.46 = 607.78 : x
  2. Step 2: Convert to fraction form
    887.46/1,224.46 = 607.78/x
  3. Step 3: Cross multiply
    887.46x = 1,224.46 × 607.78
  4. Step 4: Simplify right side
    887.46x = 744,202.30
  5. Step 5: Solve for x
    x = 744,202.30/887.46
  6. Step 6: Final answer
    x = 838.58

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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.