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Finding the Fourth Proportional to 623.01, 933.83 and 257.70

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Solution

The fourth proportional to 623.01, 933.83 and 257.70 is: 386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.01 : 933.83 = 257.70 : x
  2. Step 2: Convert to fraction form
    623.01/933.83 = 257.70/x
  3. Step 3: Cross multiply
    623.01x = 933.83 × 257.70
  4. Step 4: Simplify right side
    623.01x = 240,647.99
  5. Step 5: Solve for x
    x = 240,647.99/623.01
  6. Step 6: Final answer
    x = 386.27

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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.