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Finding the Fourth Proportional to 967.61, 1,335.47 and 547.98

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Solution

The fourth proportional to 967.61, 1,335.47 and 547.98 is: 756.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.61 : 1,335.47 = 547.98 : x
  2. Step 2: Convert to fraction form
    967.61/1,335.47 = 547.98/x
  3. Step 3: Cross multiply
    967.61x = 1,335.47 × 547.98
  4. Step 4: Simplify right side
    967.61x = 731,808.11
  5. Step 5: Solve for x
    x = 731,808.11/967.61
  6. Step 6: Final answer
    x = 756.31

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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.