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Finding the Fourth Proportional to 526.48, 725.88 and 456.28

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Solution

The fourth proportional to 526.48, 725.88 and 456.28 is: 629.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.48 : 725.88 = 456.28 : x
  2. Step 2: Convert to fraction form
    526.48/725.88 = 456.28/x
  3. Step 3: Cross multiply
    526.48x = 725.88 × 456.28
  4. Step 4: Simplify right side
    526.48x = 331,204.53
  5. Step 5: Solve for x
    x = 331,204.53/526.48
  6. Step 6: Final answer
    x = 629.09

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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.