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Finding the Fourth Proportional to 581.58, 876.56 and 556.88

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Solution

The fourth proportional to 581.58, 876.56 and 556.88 is: 839.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.58 : 876.56 = 556.88 : x
  2. Step 2: Convert to fraction form
    581.58/876.56 = 556.88/x
  3. Step 3: Cross multiply
    581.58x = 876.56 × 556.88
  4. Step 4: Simplify right side
    581.58x = 488,131.57
  5. Step 5: Solve for x
    x = 488,131.57/581.58
  6. Step 6: Final answer
    x = 839.32

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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.