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Finding the Fourth Proportional to 357.28, 535.95 and 288.50

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Solution

The fourth proportional to 357.28, 535.95 and 288.50 is: 432.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.28 : 535.95 = 288.50 : x
  2. Step 2: Convert to fraction form
    357.28/535.95 = 288.50/x
  3. Step 3: Cross multiply
    357.28x = 535.95 × 288.50
  4. Step 4: Simplify right side
    357.28x = 154,618.90
  5. Step 5: Solve for x
    x = 154,618.90/357.28
  6. Step 6: Final answer
    x = 432.77

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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.