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Finding the Fourth Proportional to 430.68, 594.14 and 281.28

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Solution

The fourth proportional to 430.68, 594.14 and 281.28 is: 388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.68 : 594.14 = 281.28 : x
  2. Step 2: Convert to fraction form
    430.68/594.14 = 281.28/x
  3. Step 3: Cross multiply
    430.68x = 594.14 × 281.28
  4. Step 4: Simplify right side
    430.68x = 167,119.70
  5. Step 5: Solve for x
    x = 167,119.70/430.68
  6. Step 6: Final answer
    x = 388.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.