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Finding the Fourth Proportional to 967.99, 1,335.80 and 548.33

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Solution

The fourth proportional to 967.99, 1,335.80 and 548.33 is: 756.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.99 : 1,335.80 = 548.33 : x
  2. Step 2: Convert to fraction form
    967.99/1,335.80 = 548.33/x
  3. Step 3: Cross multiply
    967.99x = 1,335.80 × 548.33
  4. Step 4: Simplify right side
    967.99x = 732,459.21
  5. Step 5: Solve for x
    x = 732,459.21/967.99
  6. Step 6: Final answer
    x = 756.68

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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.