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Finding the Fourth Proportional to 887.06, 1,224.29 and 555.77

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Solution

The fourth proportional to 887.06, 1,224.29 and 555.77 is: 767.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.06 : 1,224.29 = 555.77 : x
  2. Step 2: Convert to fraction form
    887.06/1,224.29 = 555.77/x
  3. Step 3: Cross multiply
    887.06x = 1,224.29 × 555.77
  4. Step 4: Simplify right side
    887.06x = 680,418.92
  5. Step 5: Solve for x
    x = 680,418.92/887.06
  6. Step 6: Final answer
    x = 767.05

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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.