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Finding the Fourth Proportional to 623.37, 935.28 and 258.20

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Solution

The fourth proportional to 623.37, 935.28 and 258.20 is: 387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.37 : 935.28 = 258.20 : x
  2. Step 2: Convert to fraction form
    623.37/935.28 = 258.20/x
  3. Step 3: Cross multiply
    623.37x = 935.28 × 258.20
  4. Step 4: Simplify right side
    623.37x = 241,484.62
  5. Step 5: Solve for x
    x = 241,484.62/623.37
  6. Step 6: Final answer
    x = 387.39

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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.