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Finding the Fourth Proportional to 491.65, 739.53 and 487.53

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Solution

The fourth proportional to 491.65, 739.53 and 487.53 is: 733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.65 : 739.53 = 487.53 : x
  2. Step 2: Convert to fraction form
    491.65/739.53 = 487.53/x
  3. Step 3: Cross multiply
    491.65x = 739.53 × 487.53
  4. Step 4: Simplify right side
    491.65x = 360,543.06
  5. Step 5: Solve for x
    x = 360,543.06/491.65
  6. Step 6: Final answer
    x = 733.34

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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.