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Finding the Fourth Proportional to 623.09, 935.29 and 609.15

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Solution

The fourth proportional to 623.09, 935.29 and 609.15 is: 914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.09 : 935.29 = 609.15 : x
  2. Step 2: Convert to fraction form
    623.09/935.29 = 609.15/x
  3. Step 3: Cross multiply
    623.09x = 935.29 × 609.15
  4. Step 4: Simplify right side
    623.09x = 569,731.90
  5. Step 5: Solve for x
    x = 569,731.90/623.09
  6. Step 6: Final answer
    x = 914.37

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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.