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Finding the Fourth Proportional to 526.25, 725.96 and 339.90

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Solution

The fourth proportional to 526.25, 725.96 and 339.90 is: 468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.25 : 725.96 = 339.90 : x
  2. Step 2: Convert to fraction form
    526.25/725.96 = 339.90/x
  3. Step 3: Cross multiply
    526.25x = 725.96 × 339.90
  4. Step 4: Simplify right side
    526.25x = 246,751.93
  5. Step 5: Solve for x
    x = 246,751.93/526.25
  6. Step 6: Final answer
    x = 468.89

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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.