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Finding the Fourth Proportional to 577.82, 871.88 and 555.32

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Solution

The fourth proportional to 577.82, 871.88 and 555.32 is: 837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.82 : 871.88 = 555.32 : x
  2. Step 2: Convert to fraction form
    577.82/871.88 = 555.32/x
  3. Step 3: Cross multiply
    577.82x = 871.88 × 555.32
  4. Step 4: Simplify right side
    577.82x = 484,172.40
  5. Step 5: Solve for x
    x = 484,172.40/577.82
  6. Step 6: Final answer
    x = 837.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.