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Finding the Fourth Proportional to 672.84, 929.34 and 542.52

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Solution

The fourth proportional to 672.84, 929.34 and 542.52 is: 749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.84 : 929.34 = 542.52 : x
  2. Step 2: Convert to fraction form
    672.84/929.34 = 542.52/x
  3. Step 3: Cross multiply
    672.84x = 929.34 × 542.52
  4. Step 4: Simplify right side
    672.84x = 504,185.54
  5. Step 5: Solve for x
    x = 504,185.54/672.84
  6. Step 6: Final answer
    x = 749.34

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1.5x scale

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.