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Finding the Fourth Proportional to 526.92, 726.68 and 340.42

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Solution

The fourth proportional to 526.92, 726.68 and 340.42 is: 469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.92 : 726.68 = 340.42 : x
  2. Step 2: Convert to fraction form
    526.92/726.68 = 340.42/x
  3. Step 3: Cross multiply
    526.92x = 726.68 × 340.42
  4. Step 4: Simplify right side
    526.92x = 247,376.41
  5. Step 5: Solve for x
    x = 247,376.41/526.92
  6. Step 6: Final answer
    x = 469.48

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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.