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Finding the Fourth Proportional to 1,596.78, 2,395.29 and 442.50

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Solution

The fourth proportional to 1,596.78, 2,395.29 and 442.50 is: 663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,596.78 : 2,395.29 = 442.50 : x
  2. Step 2: Convert to fraction form
    1,596.78/2,395.29 = 442.50/x
  3. Step 3: Cross multiply
    1,596.78x = 2,395.29 × 442.50
  4. Step 4: Simplify right side
    1,596.78x = 1,059,915.83
  5. Step 5: Solve for x
    x = 1,059,915.83/1,596.78
  6. Step 6: Final answer
    x = 663.78

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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.