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Finding the Fourth Proportional to 619.01, 933.43 and 610.78

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Solution

The fourth proportional to 619.01, 933.43 and 610.78 is: 921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.01 : 933.43 = 610.78 : x
  2. Step 2: Convert to fraction form
    619.01/933.43 = 610.78/x
  3. Step 3: Cross multiply
    619.01x = 933.43 × 610.78
  4. Step 4: Simplify right side
    619.01x = 570,115.71
  5. Step 5: Solve for x
    x = 570,115.71/619.01
  6. Step 6: Final answer
    x = 921.01

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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.