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Finding the Fourth Proportional to 457.29, 684.36 and 384.23

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Solution

The fourth proportional to 457.29, 684.36 and 384.23 is: 575.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.29 : 684.36 = 384.23 : x
  2. Step 2: Convert to fraction form
    457.29/684.36 = 384.23/x
  3. Step 3: Cross multiply
    457.29x = 684.36 × 384.23
  4. Step 4: Simplify right side
    457.29x = 262,953.35
  5. Step 5: Solve for x
    x = 262,953.35/457.29
  6. Step 6: Final answer
    x = 575.03

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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.