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Finding the Fourth Proportional to 887.52, 1,224.48 and 555.84

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Solution

The fourth proportional to 887.52, 1,224.48 and 555.84 is: 766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.52 : 1,224.48 = 555.84 : x
  2. Step 2: Convert to fraction form
    887.52/1,224.48 = 555.84/x
  3. Step 3: Cross multiply
    887.52x = 1,224.48 × 555.84
  4. Step 4: Simplify right side
    887.52x = 680,614.96
  5. Step 5: Solve for x
    x = 680,614.96/887.52
  6. Step 6: Final answer
    x = 766.87

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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.