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Finding the Fourth Proportional to 397, 595.64 and 288.60

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Solution

The fourth proportional to 397, 595.64 and 288.60 is: 433.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    397 : 595.64 = 288.60 : x
  2. Step 2: Convert to fraction form
    397/595.64 = 288.60/x
  3. Step 3: Cross multiply
    397x = 595.64 × 288.60
  4. Step 4: Simplify right side
    397x = 171,901.70
  5. Step 5: Solve for x
    x = 171,901.70/397
  6. Step 6: Final answer
    x = 433.00

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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.