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Finding the Fourth Proportional to 526.51, 726.49 and 330.29

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Solution

The fourth proportional to 526.51, 726.49 and 330.29 is: 455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.51 : 726.49 = 330.29 : x
  2. Step 2: Convert to fraction form
    526.51/726.49 = 330.29/x
  3. Step 3: Cross multiply
    526.51x = 726.49 × 330.29
  4. Step 4: Simplify right side
    526.51x = 239,952.38
  5. Step 5: Solve for x
    x = 239,952.38/526.51
  6. Step 6: Final answer
    x = 455.74

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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.