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Finding the Fourth Proportional to 526.38, 727.59 and 479.59

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Solution

The fourth proportional to 526.38, 727.59 and 479.59 is: 662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.38 : 727.59 = 479.59 : x
  2. Step 2: Convert to fraction form
    526.38/727.59 = 479.59/x
  3. Step 3: Cross multiply
    526.38x = 727.59 × 479.59
  4. Step 4: Simplify right side
    526.38x = 348,944.89
  5. Step 5: Solve for x
    x = 348,944.89/526.38
  6. Step 6: Final answer
    x = 662.91

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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.