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Finding the Fourth Proportional to 303.23, 455.18 and 283.40

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Solution

The fourth proportional to 303.23, 455.18 and 283.40 is: 425.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.23 : 455.18 = 283.40 : x
  2. Step 2: Convert to fraction form
    303.23/455.18 = 283.40/x
  3. Step 3: Cross multiply
    303.23x = 455.18 × 283.40
  4. Step 4: Simplify right side
    303.23x = 128,998.01
  5. Step 5: Solve for x
    x = 128,998.01/303.23
  6. Step 6: Final answer
    x = 425.41

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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.