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Finding the Fourth Proportional to 651.48, 976.54 and 404.69

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Solution

The fourth proportional to 651.48, 976.54 and 404.69 is: 606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.48 : 976.54 = 404.69 : x
  2. Step 2: Convert to fraction form
    651.48/976.54 = 404.69/x
  3. Step 3: Cross multiply
    651.48x = 976.54 × 404.69
  4. Step 4: Simplify right side
    651.48x = 395,189.07
  5. Step 5: Solve for x
    x = 395,189.07/651.48
  6. Step 6: Final answer
    x = 606.60

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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.