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Finding the Fourth Proportional to 526.46, 726.52 and 290.42

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Solution

The fourth proportional to 526.46, 726.52 and 290.42 is: 400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.46 : 726.52 = 290.42 : x
  2. Step 2: Convert to fraction form
    526.46/726.52 = 290.42/x
  3. Step 3: Cross multiply
    526.46x = 726.52 × 290.42
  4. Step 4: Simplify right side
    526.46x = 210,994.85
  5. Step 5: Solve for x
    x = 210,994.85/526.46
  6. Step 6: Final answer
    x = 400.78

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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.