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Finding the Fourth Proportional to 526.39, 725.80 and 494.62

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Solution

The fourth proportional to 526.39, 725.80 and 494.62 is: 681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.39 : 725.80 = 494.62 : x
  2. Step 2: Convert to fraction form
    526.39/725.80 = 494.62/x
  3. Step 3: Cross multiply
    526.39x = 725.80 × 494.62
  4. Step 4: Simplify right side
    526.39x = 358,989.09
  5. Step 5: Solve for x
    x = 358,989.09/526.39
  6. Step 6: Final answer
    x = 681.99

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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.