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Finding the Fourth Proportional to 600.37, 900.55 and 405.70

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Solution

The fourth proportional to 600.37, 900.55 and 405.70 is: 608.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    600.37 : 900.55 = 405.70 : x
  2. Step 2: Convert to fraction form
    600.37/900.55 = 405.70/x
  3. Step 3: Cross multiply
    600.37x = 900.55 × 405.70
  4. Step 4: Simplify right side
    600.37x = 365,353.14
  5. Step 5: Solve for x
    x = 365,353.14/600.37
  6. Step 6: Final answer
    x = 608.55

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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.