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Finding the Fourth Proportional to 557.85, 837.64 and 533.20

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Solution

The fourth proportional to 557.85, 837.64 and 533.20 is: 800.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.85 : 837.64 = 533.20 : x
  2. Step 2: Convert to fraction form
    557.85/837.64 = 533.20/x
  3. Step 3: Cross multiply
    557.85x = 837.64 × 533.20
  4. Step 4: Simplify right side
    557.85x = 446,626.98
  5. Step 5: Solve for x
    x = 446,626.98/557.85
  6. Step 6: Final answer
    x = 800.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.