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Finding the Fourth Proportional to 488.74, 731.65 and 360.58

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Solution

The fourth proportional to 488.74, 731.65 and 360.58 is: 539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.74 : 731.65 = 360.58 : x
  2. Step 2: Convert to fraction form
    488.74/731.65 = 360.58/x
  3. Step 3: Cross multiply
    488.74x = 731.65 × 360.58
  4. Step 4: Simplify right side
    488.74x = 263,818.36
  5. Step 5: Solve for x
    x = 263,818.36/488.74
  6. Step 6: Final answer
    x = 539.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.