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Finding the Fourth Proportional to 283.68, 425.76 and 245.28

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Solution

The fourth proportional to 283.68, 425.76 and 245.28 is: 368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.68 : 425.76 = 245.28 : x
  2. Step 2: Convert to fraction form
    283.68/425.76 = 245.28/x
  3. Step 3: Cross multiply
    283.68x = 425.76 × 245.28
  4. Step 4: Simplify right side
    283.68x = 104,430.41
  5. Step 5: Solve for x
    x = 104,430.41/283.68
  6. Step 6: Final answer
    x = 368.13

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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.