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Finding the Fourth Proportional to 600.78, 900.62 and 215.76

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Solution

The fourth proportional to 600.78, 900.62 and 215.76 is: 323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.78 : 900.62 = 215.76 : x
  2. Step 2: Convert to fraction form
    600.78/900.62 = 215.76/x
  3. Step 3: Cross multiply
    600.78x = 900.62 × 215.76
  4. Step 4: Simplify right side
    600.78x = 194,317.77
  5. Step 5: Solve for x
    x = 194,317.77/600.78
  6. Step 6: Final answer
    x = 323.44

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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.