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Finding the Fourth Proportional to 526.15, 726.08 and 329.77

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Solution

The fourth proportional to 526.15, 726.08 and 329.77 is: 455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.15 : 726.08 = 329.77 : x
  2. Step 2: Convert to fraction form
    526.15/726.08 = 329.77/x
  3. Step 3: Cross multiply
    526.15x = 726.08 × 329.77
  4. Step 4: Simplify right side
    526.15x = 239,437.75
  5. Step 5: Solve for x
    x = 239,437.75/526.15
  6. Step 6: Final answer
    x = 455.08

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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.