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Finding the Fourth Proportional to 487.69, 673.02 and 301.31

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Solution

The fourth proportional to 487.69, 673.02 and 301.31 is: 415.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.69 : 673.02 = 301.31 : x
  2. Step 2: Convert to fraction form
    487.69/673.02 = 301.31/x
  3. Step 3: Cross multiply
    487.69x = 673.02 × 301.31
  4. Step 4: Simplify right side
    487.69x = 202,784.29
  5. Step 5: Solve for x
    x = 202,784.29/487.69
  6. Step 6: Final answer
    x = 415.81

Related Problems

Find fourth proportional to 243.84, 336.51 and 150.65
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Double scale
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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.