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Finding the Fourth Proportional to 887.27, 1,224.72 and 607.40

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Solution

The fourth proportional to 887.27, 1,224.72 and 607.40 is: 838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.27 : 1,224.72 = 607.40 : x
  2. Step 2: Convert to fraction form
    887.27/1,224.72 = 607.40/x
  3. Step 3: Cross multiply
    887.27x = 1,224.72 × 607.40
  4. Step 4: Simplify right side
    887.27x = 743,894.93
  5. Step 5: Solve for x
    x = 743,894.93/887.27
  6. Step 6: Final answer
    x = 838.41

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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.